ACME
Acme Audio MTP-66 Motown Tube Preamplifier and DI
This item is available on a custom order basis only
Please contact us for more details.
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This item is available on a custom order basis only
Please contact us for more details.
Kontaktiere unsThis item is available on a custom order basis only
Please contact us for more details.
Kontaktiere unsAcme Audio MTP-66 Motown Tube Preamplifier and DI is a single-channel tube preamp rebuilt from the original 1966 engineering drawings. Its ancestor was the five-channel Motown input box that guitars and bass ran through in Detroit from 1966 to 1972.
Instrument straight into the tubes, no amplifier
Instead of miking an amp in a booth, bass goes directly into a tube path feeding a Cinemag output transformer. There is no baffling to arrange and no bleed to fight, and the signal arrives with density and compression that a clean direct box does not provide. A quarter-inch through output sends the instrument to an amplifier in parallel.
Drive set at two points in the chain
The original had no input or output control. The MTP-66 has both, so you can push the tubes hard and pull level back at the output, or work cleanly: that is what sets the amount of drive and natural compression. The microphone section is built on a fixed-gain pentode with an Acme Audio/Triad transformer and a 15 dB pad. The unit does not provide phantom power.
KEY FEATURES
- Recreation of the Motown input box from the 1966 schematics
- All-tube signal path with hand-selected tubes
- Cinemag output transformer
- Microphone section with fixed-gain pentode and Acme Audio/Triad transformer
- Independent input and output controls, absent from the original
- Quarter-inch instrument through output
- Custom VU meter in a rugged steel enclosure
TECHNICAL SPECIFICATIONS
- Type: tube microphone preamp and DI, single channel
- Gain: 36 dB
- Tubes: EF86, two 12AT7, 6V6
- Output transformer: Cinemag
- Microphone input transformer: Acme Audio/Triad
- Inputs: 1/4" Hi-Z, XLR microphone
- Outputs: XLR main, 1/4" instrument through
- Microphone input pad: 15 dB
- Phantom power: not provided
- Power: 115/230 V, 50/60 Hz
- Weight: 11.5 lbs (approx. 5.2 kg)
