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Siemens U274

Racked & Modified

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Vintage Diode Bridge Limiter/ Mic Preamplifier module built by Siemens in the late 60s. It has been recapped, heavily modded, and racked.

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Mods:

- Mic/Line switch

- Variable Input Attenuator for "Fine Gain"

- Variable Side-Chain HP Filter, 60-360Hz

- Six different time-constants for attack & release

- Output pad -20dB

- Variable Compression Amount

(Ratio)

- Custom-made chassis and regulated PSU +24V

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VA2A "The Freemonk"

Built for Chris Webb a.k.a. Freemonk

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Vintage Optical Compressor / Leveling Amplifier built on the 1968 LA2A schematics. Featuring:

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- NOS UREI Optical Cell (1970)

- NOS RCA original LA2A tubes 

- NOS UTC A-24, A-10 trarnsformers

- Paper & Oil Capacitors

- Blore-Eds Pots & Switches

Siam VU meter

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VA2A "The Argonaut"

Built for Ivo Sotirov

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Vintage Optical Compressor / Leveling Amplifier built on the 1968 LA2A schematics, but heavily modified. Featuring:

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- Increased bandwidth

- Output attenuator that turns the unit into a tube distortion

- Secondary Unbalanced output

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- NOS UREI Optical Cell (1970)

- NOS RCA original LA2A tubes 

- NOS UTC A-24, A-20 trarnsformers

- Paper & Oil Capacitors

- Blore-Eds Pots & Switches

Sifam VU meter

VA2A "The Friary Edition"

Built for Fuzz Audio

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Vintage Optical Compressor / Leveling Amplifier built on the 1968 LA2A schematics. Featuring:

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- NOS UREI Optical Cell (1970)

- NOS RCA original LA2A tubes 

- Sowter input/output transformers

- Paper & Oil Capacitors

- Blore-Eds Pots & Switches

- Sifam VU meter

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E.M.S.M.

Built for Ivo Sotirov

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Electro-Magnetic Summing Machine. This is a 8-track tape-machine-inspired hardware emulation & summing box. Featuring:

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- 3x Transformers per channel

(2x Vintage Haufe + 1x Carnhill)

- Vintage Neumann V475-2B Summing Amp

- Melcor-inspired 1731 op-amps

- NOS Germanium Diodes

VA47 "The Bomber"

All tube 3-stage channel strip built in the chassis of a vintage tape-machine amplifier. Featuring:

- Vintage Preamplifier taken from a legendary EMI design. 

- Tube Baxandall EQ from a vintage guitar amplifier.

- Tube based output amplifier.

- UTC A-12 vintage input transformer

- Carnhill Output Transformer

- NOS Mullard Tubes

- Vintage Sifam VU meter

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VAE "Earth & Sky"

Build for Hugh Neal

 

Mastering-grade Solid State Stereo Equaliser. Featuring:

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- All stepped: Input Trim, Low Boost (10, 40, 70, 140Hz), High Boost (2.5, 5, 10, 20, 40kHz).

- LED VU meter bridge

- Gold Relay True Bypass

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- CAPI GAR2520 Discrete Op-Amps

- Orange Discrete Op-Amps

- Super high-speed Analog Devices ICs

- Audiophile-grade Nichicon Capacitors

- Dual Power Supply

EQ502 "Earth & Sky"

Build for sj.2fvded

 

Mastering-grade Solid State Stereo Equaliser for the API 500-series format. Featuring:

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- All stepped: Input Trim, Low Boost (10, 40, 70, 140Hz), High Boost (2.5, 5, 10, 20, 40kHz).

- High Boost x2 switch

- True Bypass

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- Super high-speed Analog Devices ICs

- Audiophile-grade Capacitors

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Frequently Asked Questions

Valtech Audio Engineering Limited

Co No: 14264620, Co Address: 71-75 Shelton Street, WC2H 9JQ, LONDON, United Kingdom

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