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Ampex MX-10, MX-35 Mic Pre Mixer ModThe Ampex MX-10 and MX-35 are fine little mixers from the late tube era. The circuitry is straight forward Class A (as are most tube circuits) resulting in an overall smooth, clean sound. The microphone input transformer is interesting in that it is very small...sometimes referred to as a “thumb” transformer. Usually a small transformer lacks low end response, as theory says it will saturate easily and thus attenuate peaks of low frequency signal. Somehow the thumb transformer in the MX-10 / MX-35 is able to pass low freq..
$1,499.00
API Mic Pre 500 series from 312 card An API 312 card can be mounted into a 500 series size module chassis and outfitted with necessary controls to be a fully functional professional mic pre. This Mod came about from customer’s requests to make something useful from 312 cards they had sitting on a back shelf collecting dust.The Drawbacks :Not much you can do with a 312 as is, except keep as a spare for your API console.The Solution :Mount the 312 card into a sub chassis so it can plug into a 500 series rack. Include the following controls: ..
$325.00
API Mic Pre 500 series from 325 card An API 325 card can be mounted into a 500 series size module chassis and outfitted with necessary controls to be a fully functional professional mic pre. This Mod came about from customer’s requests to make something useful from 325 cards they had sitting on a back shelf collecting dust.The Drawbacks :Not much you can do with a 325 card as is, except keep as a spare for your API console.The Solution :Mount the 325 card into a sub chassis so it can plug into a 500 series rack and add a mic transformer. &n..
$375.00
Dolby cat22 mod According to legend, once upon a time during a Beatles recording session in the 1960s, the technician forgot to crew in the cards in a Dolby 301, and card 3 had come unplugged. It was intended to be used as designed for tape hiss reduction but instead, because of unplugged card 3, the result was an ear grabbing somewhat upper mid-range/high end hyped sound that was pleasant and not strident. Years later, when Dolby 301 was replaced with dolby cat22, some clever fellow figured out how to mod it to give the equivalent of unplugging card 3.The Drawbacks : Only drawback is that sometimes the effe..
$100.00
_cropped_sharpened_sfw-320x246.jpg "Focusrite 315 Mod")
Focusrite 315 ModThis mod is intended to improve the transparency of the Focusrite 315. As the 315 is primarily used by Mastering Engineers it is they who have noticed a lack of transparency not only when the EQ is engaged, but even when it is inserted in the signal chain with EQ bypassed. The Problem: Too many audio coupling caps in the signal chain The balanced input stage circuit is overdesigned and a signifiant cause for the lack of transparency On transformer balanced models the transformers are not totally transparent. Rarely if ever is a transformer “transparent” to the exte..
$0.00
_sfw-320x246.jpg "Gates SA39 mod")
Gates SA 39 mod: This mod turns a somewhat unusable Gates SA39 limiter into one of the most impressive limiters ever! Capitalizing on a fantastic design by the brilliant Gates engineers this mod eliminates drawbacks to practical use in the recording of music while preserving and even teasing out a bit more of the inherent impressive sound. The result is a totally usable fat, warm and punchy sound equal to but not surpassed by just a few other similar units. It does improve the sound passing through it. It calls attention to the instrument or vocal being recorded.&n..
$250.00
Pro Audio Gear Racking: We'll Rack any module! Scroll Down the page to view pics. Virtually any console module or other audio module can be racked up for use in the studio or in the field. Below are a few samples of gear that has been racked up at World Pro Audio. WPA Module Racks have WPA internal power supplies fitted with toroidal transformers for zero added hum & buzz. Other racking outfits use off-the-shelf internal power supplies that don’t have toroidal transformers and thus often impart some hum in the outputs. Most racks are built so that the modules can be e..
$0.00
Repair 3M overdub premaps Repair A-Designs RedDi Repair Adam 7 speaker Repair Adcom GFA-555 Repair Adcom GFA555 amp Repair ADL 1000 Repair ADR Compex F760sX-RXRepair ADR 769X VS Repair ADR F70 Repair ADR F769X-R Repair ADR F760 Pair Repair ADR F760X-N Repair ADR F760X-RS Repair ADR Gemini Easy RiderRepair AKAI M80 &n..
$0.00
Orban Optimod 8100A and 8180A mod: The Orban 8100A and 8180A processors were originally designed for broadcast audio ( radio and tv stations), with secret circuitry to keep high frequencies optimized even when the received signal is weak or wavering, such as near the edges of a broadcast stations allotted range. Additionally these processors evened out high frequency differences between songs, commercials and announcer voice. These processors and others like it can actually improve a recording that is a bit dull relative to the norm, and record buyers have often remarked that the vinyl or cd etc they purchased did not ..
$250.00
Phase Linear 400 Mod: The Phase LInear 400 and 700 amplifiers are among the best ever transistor amplifiers ever sold. The circuit is an excellent example of both simplicity and sophistication. A huge, high quality power transformer backs of the need for transient handling typically needed to reproduce music. The large number of output transistors allows for music to to spend more time in the more linear part of the transistor. Opinions as to the excellence of the circuit may vary, but the experience of the sound and music reproducing capabilities of this is hard to dispute. For one thi..
$300.00
Pro Audio Equipment Modification Modification not otherwise specified. Amazing things are possible. ..
$0.00
Pro Audio Repair Repair of pro audio equipment, with emphasis on repair of vintage tube equipment and repair of discrete transistor equipment. We have the tools and experience to find and fix what ails ‘er. Pro Audio repairs are made with both analog and computer based test equipment, integrated through our proprietary Super Test Jig, which brings speed and accuracy to the repair bench. Over 25 years of wide ranging repair experience backs up the entire operation. We emphasize competency, thoroughness and honesty. Experienced and skilled repair of mi..
$88.00
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