Tube linestage based on the 6922 dual triode. Tape loop and capacitor selector. Choice of face plate material and options on clearance chassis while they last. See below for clearance chassis. Contact us for special pricing on remaining chassis.
A 6SN7 version of the Foundation is also available.
The 6922 based Foundation is a single ended tube preamplifier designed around the 6922 (footnote 1) dual triode. The design goal of the Foundation preamplifier was to provide an audiophile quality at an affordable price.
Remaining amplifiers have two large vent holes on the top of the chassis with pure copper mesh for ventilation.
The Foundation line preamplifier is designed to complement most power amplifiers available including tube or solid state design. The new capacitor selection allows you to choose the coupling capacitor size to best match your amplifier or provide a high pass filter to take the load off your power amplifier when using a powered subwoofer.
The power supply is of usual Response Audio quality. A high quality toroidal transformer feeds a solid state CLC (choke filtered) design utilizing polypropylene filter capacitors. Tube filaments are powered by a separate regulated DC supply.
The circuit is designed in such a way as to have a maximum tube life for the 6922 tubes.
The preamplifier has more than enough output for any power amplifier, transistor or valve, and is ideal for driving long interconnect cables to remotely located power amplifiers due to its low output impedance.
Standard Chassis is black anodized aluminum 16" x 16" x 5.5" with laser engraved aluminum front panel.
All Foundation products are housed in an all aluminum chassis with aluminum front backing plate with a laser engraved acrylic front panel. The chassis itself uses extensive bracing to help eliminate any resonance from the chassis to get into the signal. We have decided to not pursue expensive, custom CNC'ed aluminum chassis for the Foundation Series to keep our pricing reasonable. Do you want to spend an extra couple of thousands of dollars for a fancy chassis only to get the same performance?
See pricing below.
Footnote 1: The Foundation circuit is applied in a way that allows the use of the 6DJ8 tube without any abnormalities.
CAP - This feature allows you to choose the output coupling capacitor arrangement
TAPE - Allows the use of an EQ, Processor, Tape unit, and of course our Harmonia v3 DHT tube stage
Rear Panel Layout
Foundation prototype with Bronze Acrylic Front Panel
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