>
 | . Nov 15, 2017 · Transformer balanced I/O are via XLRs (pin #2 hot) or barrier strips. MP566 The MP566 is a dual-triode vacuum tube circuit preamplifier based on a design that has been used in several famous devices from the 50's, which has been adapted to the ' 500 ' format of API*. It delivers the vintage compression and warmth of its ancestor thanks to the optical coupler response, side chain and transformers. For decades, the renowned ‘2A style circuit has become the go-to device for seamlessly handling vocals, bass, and a wide variety of other instruments and program material in an effortlessly smooth way. Please don't hesitate to contact me with any questions. No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of the classic '2A optical compressor. So it was just an output amplifier into a transformer. The N 2065 filter has a Class A circuit and contains Marinair LI. Determine the proper current rating of the fuse by dividing the transformer’s “VA” rating by 120 volts: in other words, calculate the full allowable primary winding current and size the fuse That's a big fat unscreened transformer, so there is plenty of capacitive coupling between the input and output. JT-11P-1 / JT-10K61-1M Teletronix LA2A Circuitry Modifications. True to its inspiration; the WA-2A boasts an all tube, completely discrete signal path with through-hole component topology. For the Rev 1 we used Swedish Lundahl transformers for input; UK-made BBC/Sowter units for interstage (a really critical component for this compressor); and Canadian Hammond 1:1 600 ohm transformers for output. The fact that it offers 40 dB of gain from input to output allows it to also be used as a preamp and compressor. Line Output; Direct Box; Contact. The controls are simple, as an LA-2A should be: Gain, peak reduction, limit/compress switch, meter mode, bypass. Two 6N1P-EW dual-triodes are installed on the audio circuit, while the compression circuit is equipped with the 6N2P-EW triode and the 6AQ5 pentode, which control the work of the I don't use the layout or turret board of the LA2A. The input of the system includes a Sowter 4383 transformer, the output an Edcor 15k/600. For a more economical, open frame, universal primary - check out our "260" series. New Drip Electronics La2a Build Thread Well folks I am sure that due to the incredible web interest in the DIY aspect of the famous La2a compressor, it is worth posting here the progress of my now pending build. The WA76 has a fully discrete signal path and uses the original Reichenbach Engineering's (now CineMag) transformer design. 2 x 2N5457, original and matched for pair FET transistors. To help our customers understand proper connections for dual primary and/or dual secondary transfomers we have prepared 4 examples (below) on a hypothetical dual primary & dual secondary transformer. We ask that you do not distribute these without prior consent from Jensen Transformers Inc. Bo Medin, head honcho at Golden Age Project, is not only Sep 19, 2017 · warm audio eqp-wa vs klark teknik eqp-kt, pultec-style tube eq shootout by Mark King for proworkshop. Each channel can be used individually or they can be stereo linked. In this top view, you can see the screw head and flat washer. This is classic opto-compressor, Which uses electro-luminescent panel and photoresistors to provide gain reduction. Clearly designed to be a replica of the infamous LA2A, this is a very appealing product with an even more appealing price tag. It has been very impressive. Finish: Black powder paint to match our 1650 series of output transformers Units can be run full wave bridge or full wave C. Output transformer would be CM-2840 (5:1) and input would be CM-2570 (1/2:18CT) you basically strap it 1:9. Oct 27, 2014 · The 1176 Limiter Plug-In Collection offers painstaking emulations of three distinct 1176 revisions, capturing their transformers, FET and bipolar transistor amplifiers, and colorful input/output The MP 5. we are pleased to announce the re-release of some of our most popular designs, all in one set! Dec 09, 2011 · And UTC A-24 for output? I also have a few chunky vintage 1:1 audio transformers marked ‘Swavesy’, which is a village near where I live, a couple of miles down the road from St Ives. The LA500A is JLM’s take on an LA2A/LA3A-type optical compressor for the API 500-series format. Save this Seller. I'm attaching a link to a video I found on YouTube comparing another builder's Drip Opto 4 to a UA LA2A reissue to give an idea of the potential of the Drip circuit. la2a output transformer: Edcor XSM10K/600. Shown below is the 5002 output transformer used in the rev A Classic clones of the best studio hardware in the history of audio recording. Preamps by Seventh Circle Audio, 1176, LA-2A, Fairchild, Pultec and classic tube gear. Similar to API 550 eq but better. OUTPUT TRANSFORMER for Pulteq EQP-1A. However, there are some significant differences too. Description. Dec 11, 2018 · The output transformer was really a bit of an experiment as we hadn't settled on which commercial transformer to use but it has turned out quite well so we will probably end up leaving it and saving some $$$ - I'm not sure if I did this the right way but with a 560Ohm resistor and scope connected across the LA2A output the response is good from 15k/185 ohm output transformer for driving a balanced ohm line from push-pull 6SN7, ECC83 etc. We initially used the optional IC balanced output but after some testing we decided we preferred the transformer outputs. The CM-2570 has much more lamination than the A10, according to David from Cinemag « Unused UA 22-0022 Tube Power Supply Transformer With 7, 42, And 240 VAC Secondaries. Although it is a 10K-10K bridging transformer, rather than the 600R - 50K of the original, many people have reported good results using it as an input transformer in LA-2As. Those elements had at least as much to do with the sound as the opto element. If you need, please let me know. 3mm black anodised laser cut, vertical linished with white lasered on text for long lasting zero wear finish. DSP operations are pipelined using the SSE2 instruction set. The LA610 draws heavily on the original 610 and LA2A circuitry. If this unit was released 10 years ago the pro audio community would have went crazy. I have more UTC A-24. the drip design of the classic and out of reach u73b compressor limiter is an amazing feat of layout achitecure and electrical engineering . Minor scratches,solder residue and wear (See Pics) This transformer is used and is in great shape. (similar to an LA2A-style It has RE-115 K mic input transformers and the same output transformer that’s used We seem to be living in a golden age for high-quality, inexpensive hardware. adjust the Gain Control to achieve the desired output level. That can likely be from 10k to 20kohm impedance and a PP style, as there is no bias current through it. 273-47k) VPS-LA2A Series 2-Axis Linear Amplifier Power Supply - requires external single or three-phase center tapped isolation step down transformer. Both output transformer number is UTC F-8603. Pro Audio Equipment WA-LA2A (2) WA-1073 (2) Littlelabs VOG TB-12 Tonebeast Preamp JDK R22 Master Bus Comp Carnhill VTB2281 - Neve Output Transformer 1073 Preamp & EQ (2) WAEQP (Pultec) (2) 1956 Vintage Ampex 351 Preamp 4 Channels of Warm Audio 412 - API Style Preamp. Find many great new & used options and get the best deals for NEW UTC A-24 output transformer for Teletronic UREI LA-2A at the best online prices at eBay! Free shipping for many products! The IGS ONE LA is an input and output transformer balanced, full tube device. Anyone know anything about these? I’m struggling to find reliable historical info online… These are custom, hand built with care, one unit at a time. DIYers have built this unit using many configurations of input and output transformers. Never before have there been so many classic designs delivering professional performance at prices that would have once bought you only mediocre, home-studio kit. The original units were made until 1969, but the line was resurrected by Universal Audio in 1999 and new production units are still available today. As usual, this new tutorial is excellent. While few studios use barrier strips for input/output audio these days, it's nice to have such historical details presented on the reissue. Is it too good to be true? Warm Audio have built a reputation for building high-quality $2099. Find many great new & used options and get the best deals for NEW UTC A-24 output transformer for Teletronic UREI LA-2A at the best online prices at eBay! Free shipping for many products! Sep 13, 2009 · The insurmountable problem with an la-2a in a pedal is that it was a high voltage tube circuit with input and output transformers. Transformers may draw high “surge” currents when initially connected to an AC source, and these transient currents will blow a fast-acting fuse. This video has a fee attached to it and also a short trailer. APP 540 - omnia:arts was one of the first to build and test these two gyrator EQ's using pcb's designed by the transistor wizard Pier Paolo Abbatte. Flexible routing and link off mode u73b. Its primary function is to convert the unbalanced nature of the 1176 circuit to a balanced line output, and to provide the proper impedance matching to drive the line impedance of 600 ohms. I am selling one pair of new UTC A-24 transformers. - Do you need a big, heavy transformer to get deep bass response? Examples that are given include Reddi, LA2A, other classic studio gear. The classic '76 was a major breakthrough in limiter technology, and used on hundreds of hit records since its inception. Two classic designs — the 610 preamp and LA2A compressor — are combined for the first time in this attractive new reissue. For that "high end" look & feel check out our potted versions - the "300P" series. limiter. The LA-2A Leveling Amplifier has only a single gain stage and is one of the simplest compressors to operate with two knobs: Gain and Peak Reduction. This is the transformer that was used in the output stage of the Teletronic UREI UA LA-2A. 4) The meter switch has only 2 positions: GR (gain reduce) and +4. Total dc resistance ref secondary 14 ohms. The output transformer is mounted using the supplied hardware. Double sided Gold plated rear edge connector. Feb 15, 2011 · It's essentially an LA2A with Jensen transformers and the current UA T4b. The metering can reflect, optical gain reduction, discrete gain reduction, or output level. Page 4 Universal Audio LA-2A Leveling Amplifier. I have one that a friend wanted me to work on. It's early days, but it's all going well - it's such a simple, elegant type of amp. Used original UTC A-10(A-11 on some which is upgrade) and A-24 output transformers. FREQUENCY RESPONSE. 5 watt) Resistors (2 watt) Mouser Part Numbers for Metal Film: 273-value of resistor (e. i can not say enough good things about this. Power Transformer 12AX7 6AQ5 I am selling one new UTC A-24 transformer. Being toroidal in design, it has a major benefit over the conventional EI-style transformers - it radiates a significantly reduced electro-magnetic field, and that helps keep hum levels very low. C16 4 x 1' Adaptor cables Lugs to XLR for UREI LA2A LA3A 1176 The heart of this stage is the output transformer, whose design and performance is critical. 00 (5 offers) - Buy HA100X Compressor Tube La2a Limiter 2a Transformers La3a Chandler Mc77 Dbx Rack 100x . LL1527 has been generally accepted by the audio industry as the general purpose audio transformer. Nov 15, 2017 · "When we sold our family's home in L. The WA-2A proudly features custom, large-core Cinemag input and output transformers, four premium vacuum tubes, and the legendary Kenetek opto-cell, considered by many to be the world’s finest. KT Pultec EQ (2) RE-501 Roland Chorus Echo STAM 4000G Bus Compressor Tech 21 Geddy Lee SansAmp For instance, you might call up the chain of the optical compressor, then to the Class-A output and Iron transformer, for vocals, or select just the Class-A VCA compressor with a 10:1 plus the Steel transformer for crushing some room mics, and on and on. There will be a bag containg two long #4 pan screws, nuts, and lock washers. Click picture to watch the first unit being made The Schematic: Hammond Manufacturing is a leading manufacturer of industrial enclosures, electronic enclosures, racks & rack cabinets, transformers, outlet strips and climate control products. The LA-2A Leveling Amplifier is designed to prevent an increase in output level beyond . Eight vacuum tubes give the ADL 1500 its unmistakable richness and depth. SSE2 optimized code. Model LA-2A Leveling Amplifier Universal Audio, Inc. This requires you to parallel the secondary wirings of the transformer. What you will get from this is a standard two wire AC output with no centre tap. A level control pot with an expanded 20-segment metering system shows precise mic gain levels, while control switches include polarity, 48v phantom power, input pad, mic/line select and 2:1 transformer routing, which selects a lower gain contribution from output transformer. It also features custom, large-core Cinemag input and output transformers, four premium vacuum tubes, and the legendary Kenetek opto-cell, considered by many to be the world’s finest. You get that nice gooey tube creamyness we all love. Golden Age Project Comp-2A Audio Levelar. As this was my first T4b device I did a bit of research and found an NOS T4C from David Kulka. US-made Cinemag input and output transformers Custom optical photocell Warm Audio's 1-year warranty Warm Audio's WA-2A: stunning value on a classic compressor! More options for those that may inquire: If you have a unit that you would like modified send us an email on our website to the Mod Shop or simply purchase your Mail in service. 10K ohms CT to 600 ohms CT Interstage Matching Transformer RoHS Compliant UTC A-24 output transformer The T4B opto cell – this is where the magic happens! Learn more about how this component works and what it does inside of the LA2A in my „The 3 knobs“ e-paper A couple of years ago, we ran tests on the new transformers vs. Jan 28, 2016 · Announced at NAMM 2016 and shipping from April, Warm Audio present their new WA-2A. The input and output transformers, for example, are the same as those used in the 610 preamp. Nov 24, 2015 · The output stage of the 1176 is a carefully crafted class A line level amplifier, designed to work with the (then) standard load of 600 ohms. This is a copy of the UA LA2a. The first option was to use the Jensen transformers JT-11-P-1. In stock! Shipping time: 1 - 2 workdays Recommended output transformer for La2A projects. I do believe "Studio Electronics" was a Bill Putnam endeavor however, this unit appears to be a rev 2, with HA-100X input transformer and compressor/limit switch and T4A designator. Loading Please wait 201-991-3300 The LA502 is a soft knee, electro-optical compressor based on the LA2A/LA3A design, which we have adapted to the '500' series format. The product line at CineMag traces its lineage back over 60 years specializing in audio transformers for the audio professional. Faithfully recreated by Ed Anderson. How does Warm do it? Through economies of scale, mostly. For a 2x 12V transformer, you will get 12V AC output, but a current that is double the rating of each winding individually. See other items. Please see the photos for full details. The very first product from Rupert Neve Designs was the beloved 5012 Duo Mic Preamp, and the 5211 represents a dramatic evolution of the 5012’s features, circuit design and form factor, all brought together with the custom output transformer from the flagship Shelford Channel. When I get it I'll write about the qualitative differences (sorry I Classic clones of the best studio hardware in the history of audio recording. Adaption includes changing to standard european transistors, component values, Lundall output transformer and rotary switches for easier enclosure layout. Black Lion’s B172A is a veritable Swiss army knife of compression featuring both optical and FET limiter circuits. Hand built point to point as original. NOS capacitors. Primary is 15K CT, secondary impedances are 50, 125, 200, 333, and 500 ohms. The WA-2A boasts an all tube, completely discrete signal path with through-hole component topology. This winding was utilized within the feedback loop of the output amplifier providing some additional tonal character. On the flip side, my DI with small / light Jensen transformer is not lacking for lows. Mix buss output on pin 11 for Radial Workhorse rack Test Préampli UNIVERSAL AUDIO LA610 Universal Audio LA610 Recording Channel Published in SOS. LA2A Using one of these in a software environment is great compared to an actual rack unit. The arrangement should be screw->flat washer->transformer->PCB->lock washer->nut. I used this amp because it works very well and has excellent 5K transformers. The original also had a +10 output setting for the meter. Sowter Type 1290 - BUY AC coupled cathode follower Output Transformer for OPTO4/5 (LA-2A) Compressor . Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. Inputs: 120/240VAC 50/60Hz @2A for powering +/-15VDC bias supply & amplifier fans, single or three-phase from secondary of center tapped isolation step down transformer for generating amplifier bus. Evolution and Revisions The following schematics are free of charge and available for your sole use by registering as a user. The D-LA2A is a PCB for two Urei LA2A replicas + tube heaters and psu. The UTC HA-100X input transformer has a 60kohm secondary, along with multiple alloy shields for hum rejection. The key to proper connections is the phasing information. Warm Audio's WA-2A set its target high: the most iconic tube compressor in history. www. Select Transformer Style General Purpose Transformers LL1527XL. On request is possible use original transformer UA-5002 in your replica. A lot of those old transformers aren't made today, so replacing them with modern equivalents will results in a different sound. universal_supply_house . Internal jumper for output ground lift. Build quality is great, sound is great and it is quiet even high output settings. The information contained in this manual is subject to change without notice. Newest in the series of Acme Audio Manufacturing’s line of faithful recreations of legendary Motown gear, this single-channel lunchbox preamp has been exactingly reborn using the original 1966 engineering schematics, and features an all-tube signal path, with hand selected tubes that drive a Cinamag output transformer. Where 1176's used to dangle from big-name engineers' racks like so many fruits from Tantalus' tree, they're now well within reach of anyone with a soldering iron and a modest budget. Though the T4 cell makes the LA-2A shine, the overall transformer and tube amplifier design of the LA-2A also plays a huge part in its longevity and popularity. Both have DOA input and output stages with EA 2503 output transformers. makes no warranties of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. 1 x 2n3053, original transistor used in block of output amplifier. Transformers and output section also make a difference. I set the amp up so that 3 different sets of output transformers could be tested against the Electra-Prints. 31267/s input and Lo 1166 output transformers for that classic sound N sound. try the LA2A-light! (do a search in the archives and/or schem2). Look at the pictures below, and you will see that it is not a fair test. last year, we came across his design notebooks, with notes on all the transformers he ever designed," Bill explains. This does away with tubes and high-voltage supply, but works nicely. The LA2A “Leveling Amplifier”, as compressors also used to be called, was invented in the early 1960s by James F. This is like the Brooklyn Bridge of audio, if it fails you are screwed. The IGS ONE LA is an input and output transformer balanced, full tube device. Huge output transformer (same size as Neve LO1166). I have another unit (not for sale)and one of the output transformer have been change for a UTC A26 so i thing the model F-8603 is a equivalent but The analogvibes Tube Opto Compressor chassis is designed for the original UTC HA-100x input and UTC A-24 output transformer. 12 is a mic preamplifier based on one discrete Op-Amp, one Cinemag input transformer and one Cinemag output transformer. This is a copy of the UA LA2a The WA-2A boasts an all tube, completely discrete signal path with through-hole component topology. Two 6N1P-EW dual-triodes are installed on the audio circuit, while the compression circuit is equipped with the 6N2P-EW triode and the 6AQ5 pentode, which control the work of the VINTAGE UTC A24 Audio INPUT OUTPUT TRANSFORMER LA-2A Tube compressor RCA preamp. As far as output section, a good example is the 1176. Keep in mind that the original LA2A excels at *subtle* effects, especially for vocals. There is simply not room in the 601 chassis, so I used plain old point-to-point wiring. If you flip the input connections you'll likely get a somewhat different measurement. The solder terminals are pretty clean with some solder residue and are in good condition and ready for installation. The effect is illustrated in Figure The 5002 is a reproduction of the output transformer used in the early Rev. The “A” unit is identical to JLM’s earlier LA500 unit, except that it adds a “slow attack” functionality that can be accessed through a pull-out switch on the Threshold pot. Universal Audio, Inc. Housed in just 2 units of 19” rack space, the B172A contains two separate stages, a Seventeen / 1176-style compressor, and a newly designed Teletronix LA2A-style stage featuring Black Lion’s own T4BLA opto cell element. Jensen also has a simple schematic showing how to adapt the LA-2A circuit for this transformer. Model LA-2A Leveling Amplifier Universal Audio Part Number LA2A-M01. Dripelectronics LA2A PCB Parts List Estimated Quantity Price reflects Mousers 10 piece minimum Resistors (. An audio legend at work. com PO Box 3818 Santa Cruz, CA 95063-3818 Teletronix LA-2A by Universal Audio Thank you for purchasing this reproduction of the Teletronix LA-2A. For those of you using or curious about how to use an 1176 (hardware or plug-in), Fad Dupont / How to Use an 1176 Compressor - PUREMIX has a new video on it. Sep 26, 2018 · The UTC A-24 output transformer is used in the Tek, and that OT has a 15k primary impedance. They started out with a discrete Class A output section (blue stripe). On the one Replica of tube opto-compressor Teletronix LA-2A. A. The WA76 Discrete Compressor is a modern reproduction of the Classic '76 Revision D. The LA-2A was originally produced in the early 1960s by Teletronix, which was later acquired by Babcock Electronics Corporation. "In the 1176, the custom output transformer is a complicated circuit with three layers of feedback embedded with each other; that transformer was really tough for us. Cinemag has some great candidate for it. LL1527 is a truly general purpose transformer for microphone or line input, for output and for galvanic isolation of units. This transformer was used in the 2-LA-2 dual limiter. Note pre-UREI label of manufacture. . All of the transformers tested were pint sized compared to the Electra-Prints. The later 1176 & 1178's utilized a standard output transformer without a secondary tertiary winding in the feedback loop. Modern recreations from larger transformer winders tend to focus on improving specifications, which washes out the original character and tone that made these compressors so famous. Before they hit my A/D (Apogee ad16x - yes, it's older but I like the sound), I can route the pre's any which way through the patchbay and, if the vibe calls for it, I can run the preamp through any one of selection of outboard compressors and eq's to impart a little of "that" thing - whether it's just getting the sound of the LA2A output B11148 Type Output Transformer, All UREI UA LA-3A, 1176LN Rev F/G Compressors UH Dual Rack Mount kit for silver face UREI LA-3A LA-4, etc UX Adaptor cable kit 5' Lugs-XLR for UREI LA2A LA3A 1176 New Cinemag CMLI-15/15B2 Shielded Input Transformer For DIY UREI LA-2A, Etc. drip brings you the 1:1 design after a year of work taking on the challenge to bring this rare bird All the crucial parts, including in- and output transformers, sidechain and audio path tube stages, filters and of course the T4A cell have been faithfully modeled and matched with an original '68 reference unit. The tubes are joined by audio input and output transformers which, in common with those in most Golden Age products, are This tiny toroid power transformer is made in England by a traditional and long-standing transformer winding company. A classic rare filter sampled from two units for real stereo processing. Perfect working condition, fully guaranteed. Lawrence. The new LA2A's sound good, but they do not sound like original ones. Apr 18, 2011 · The Complete Guide to UREI/Universal Audio 1176 Revisions April 18, 2011 08:56 3 Comments Times are good for building a DIY 1176. Moving to the rear, we see your typical back mounted tube and transformer set. real "old stock" HA100x transformers and they are made of different materials - that is, the laminations have to be made of different materials because the test rather different. BUT The one thing that you MUST get right is the one critical part of the signal chain that so many seem to over look. Dec 13, 2006 · I'm building a simple Class AB amp using transistors push-pulling an output transformer. These have a faster release and were designed for the Urei BL-40 Broadcast Limiter. The original Triad R-4A power transformer (earlier versions used a power transformer marked only PT894) can be found on eBay occasionally and at a reasonable price, but the Hammond 369JX is a fine replacement and features a universal primary. If you want an la2a but dont want to shell out the cash this is your unit. Path: Home > Transformer Index > Power > Basic Hook Up Data. Socketed to allow for retro-fitting with other opto-cells For instance, you might call up the chain of the optical compressor, then to the Class-A output and Iron transformer, for vocals, or select just the Class-A VCA compressor with a 10:1 plus the Steel transformer for crushing some room mics, and on and on. A-E FET compressor models. Recommended output transformer for La2A projects. Hamiltone vintage LA2A compressor built to original specs. The heart of this stage is the output transformer, whose design and performance is critical. They don't cut corners on components (the WA-2A employs a custom optical photocell and genuine US-made Cinemag transformers), but they do order parts and build in quantity, which helps to keep costs down. a pre-determined point, and due to its unique deSign, functions as a combined compressor and . It's actually a "Red Stripe" clone of an LA2A that I'm retro fitting with vintage UTC transformers. T. 50% Mumetal core for high bandwidth and dynamic range, Max output level at 50 Hz +28 dBu (19 volts). A note about transformers: The La2a's original UTC HA100X (or A10) input and A24 output transformers do appear on eBay, but can be rather expensive, however, there are equivalents available from Sowter and others. However there are great subsitutes available by Sowter in the UK (link in the BOM) This adapter will let you use a Sowter 1449 input transformer in place of the UTC HA-100x. Came from working unit. The LA-2A Leveling Amplifier is an audio compressor invented by James F. This only affected the meter and does not affect the output level. Though there have been reissues of the LA-2A, very little has changed from the original design, which is a testament to its reliability and linear response. This is an adaption of the original UREI 1176 LN rev#F to components and parts that is available (hopefully) everywhere. A high impedance meter could easily read a fraction of mains voltage between the center tap and earth. Black Lion Audio says that the LA-2A side features a Cinemag input transformer, while both sides have the company’s own, Chicago-wound output transformers. Presets contain a combo High pass and low pass in each instance Low pass bypass , 8,000hz, Read more Signal path: From the input transformer signal passes through cascading halves of a 12AX7 and into a cathode follower built on stacked halves of the 12BH7 feeding the output transformer (through a DC blocking cap). 10K ohms CT to 600 ohms CT Interstage Matching Transformer RoHS Compliant Edcor XSM150/150. ll transformer are UTC and the 2 input transformer are ha-100x(same use in la2a compressor and early version of Ampex 350) with presto number(F-8602). This LA2A sounds as great as it looks and is in perfect condition. We at Sweetwater can attest to the fact that there's no shortage of LA-2A plug-ins — testimony to the hardware unit's enduring relevance, sonic appeal, and dynamics-control prowess. Primary can be strapped for 100, 120, or 240 volts. uaudio. Best Mic Preamp for DI Bass Guitar Recording . It will cost you about 100USD for the pair and you'll have a top quality transformer set. This is not a mass produced unit; true to AudioScape form! The Opto Comp is our painstaking, high quality take on a famous 60's Optical Tube Compressor known for it’s sonic elegance, extremely musical compression and buttery smooth, hefty “box-tone” just by running audio through it tubes and transformers. It was no problem feeding unbalanced I/O signals to the LA-2A using custom cables with pins 1 and 3 shunted together. So, is there a quantifiable benefit of size / mass in transformers? First we will consider the AC / single supply scenario. Output amplifier changed to a push-pull (class-AB) configuration from the original class-A design Output transformer is changed to the B11148 type with 12 dB of gain (same transformer as the LA-3A) Push-pull design provided more output drive, and was based on the 1109 preamp Good quality, correct values and the workmanship is decent. Seller information. Our product line is not limited to what is on the web site where only the currently more popular designs are listed. I think Moosapotamus also has an La-light inspired pedal/modified version up. LA2A Style, Transformer balanced, high voltage, opto (Light controlled) tube compressor Fully discrete signal path Utilizes custom USA made CineMag input and output transformers Utilizes USA made Kenetek opto attenuator. Conservative designs - CSA certified (209651). 00 to $4000. This part is the capacitor that passes the final audio to the output transformer. Vintage UTC 0-1 Transformer (B) Made in USA Condition Good. Order Now. drip legacy series set 175b compressor / opto 6 optical compressor / v72 mic pre / ba6a compressor. com We've been using the Warm Audio EQP-WA since they first hit the market, as early adopters we purchased two from the very first batch, we've since added a second pair because we liked the first pair so much. BUT, they need an output transformer, and a new Hammond output transformer costs OZ$60, and I'm not going to pay that for one part for an experimental 5W transistor amp. The insurmountable problem with an la-2a in a pedal is that it was a high voltage tube circuit with input and output transformers. Our transformers, custom designed by Ed Anderson, are meticulous recreations of the original UTC 0-12 input, 5002 output transformer, and 11754 power transformer. The ADL 1500 Stereo Tube Compressor/Limiter is a brilliant, 2-channel, all-tube design, providing phenomenal dynamic range with a clear, punchy, warm sound! Its "invisible" compression has made the ADL 1500 a very in-demand item. g. Toroidal transformers and power supplies |