657 PCB with parts installed. No Transformer.
Quantity in Basket:
Shipping Weight: 2.00 pounds
This is the famous tube section used in Granite Audio's
Model #657 Tube CD Player. This tube section made the
Granite Audio #657 Redbook CD player sound even better
an expensive SACD player playing SACD's.
This kit comes with the PCB stuffed with parts. Tubes
are not included. This kit uses two
6DJ8 tubes, one for each channel; and one 6X4 rectifier
The parts are all top quality audiophile grade parts.
The large coupling caps are Sprague 715P polypropylene.
The diodes are Schotkey Ultra-Fast Recovery. The 6DJ8
sockets are ceramic. The electrolytics are Panasonic and
Nichicon. The plate resistors are Holco Precision with
leads. Input and output jack solder points are clearly
and labeled, as are the solder points for the transformer
leads. The PCB is top quality glass epoxy with plated
through holes and Made in USA. Kit is furnished with a
This kit comes without the transformer, so it's great to
be used in an integrated power amp project where you need
a tube preamp section, but already have a power supply
transformer that is big enough to handle this extra section
too. The transformer will need outputs for 5VAC @ 2A, 6.3VAC
@ 1.5A, and 480VAC CT @ 40ma. This will make an ideal
preamp section for your integrated project, because it will
be totally isolated and separated from the power output
PCB 4.5" x 4.3" x 3.1" High including tubes and standoffs.
Use this link to view a larger 12" photo.
If you're a small or large OEM and interested in buying
quantities of this kit, please contact me for terms. We
have 60 of these in stock and can make as many more
as you want.