Guavatone PCB Requests

Guavatone PCB Requests
Record Engineering Development Department Type 47 inspired dual tube preamp used on well known 1960’s British recording sessions to replace the Siemens V series amps. Featuring a pentode front end and second stage military parallel triode configuration. (EF86/EF806/6267 and 6DJ8/6922/E88cc respectively). Stable, quiet, compact and efficient 290-300 VDC power on preamp PCB; linkable for stereo units. Very clean signal path with 2 high quality coupling capacitors and extra bypass cap options. Film bypass caps on cathodes. Practical NFB 12 position gain switch using an ubiquitous Grayhill PCB mount switch with 2 polystyrene caps for HF compensation. Film bypass caps on high voltage decoupling caps. 4 Auxiliary PCB’S make P48, dual PAD, DI, and GAIN wiring a breeze. 2 relays take care of automatic MIC/DI switching and Output polarity switching duties. Some engineers have really been enjoying the subtle ‘SQUISH’ compression option. Filament options for AC or DC and stage 2 tube variations like a 12V 12bh7. Tweeker’s Delight!
Power PCB sets P48 and relay power, balances Filament AC, and provides and easy route to ON/OFF indicator lamp. Optional circuit to elevate Filament ground reference. P48 doubler or trippler. Unregulated Relay/Auxiliary 12 or 24 volts.
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Orange 86 Preamp PCB set$40.00

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Item subtotal:$0.00

PSU PCB$20.00

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preamp kit$100.00

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PSU KIT$20.00

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Total $0.00
Preamp Kit includes Diodes, Resistors, Capacitors, Terminal blocks, Transistors, Relays, and DI Jack.

PSU Kit includes Diodes, Resistors, Capacitors, Terminal blocks and Transistors.
Select Gain Switch Option for Kit Parts*

Old Gain SwitchNew Constant Impedance Gain Switch
Would you be interested in the following if available?*

Kit with Single channel enclosureKit toroidal power transformerNo Kit, I’ve got this 😎Other
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Please Note: Depending on inventory, Orders may take 1-2 weeks to ship.
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USA $10 Canada $26 Mexico & South America $32 Europe $34
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