1625 Mono Block Amps - 55 WPC $1400 New price

[jonparkhurst]

1625 Mono Block Amps - 55 WPC

I may be making a huge mistake, but they have to go, and to a good home. The power tubes are plentiful and inexpensive: some are as cheap as 6 dollars. Custom made mono blocks with high end parts and more power than most need. Includes all of the following:

Full set of NOS tubes, plus amp stands and extra power tubes.

Shipping in three boxes from 54650


The output power is around 55 WPC. Special ordered pair of power transformers for the voltage taps. There are separate power supplies for the 12SN7 and 1625 tubes.

The soundstage is very wide and deep, and a much more noticeable 3D effect than other amps I have on hand. The theory as to the depth of the soundstage is use of 1 watt PRP resistors vs. ½ watt units. I put in a pair of 12SX7 input tubes in the 12SN7 slots, and 1940's RCA Army Signal Corps output tubes. It also sports NOS ceramic sockets from the late 40's or early 50's, along with NOS chokes from Chicago Transformers from early 50's, mil-spec 10 turn bias pots, 1 watt PRP resistors, about 3 times the required reserve cap storage, Mundorf Silver/Gold coupling caps, Cardas copper binding posts, and Vampire RCA jacks. They are dead quiet, as quiet as or quieter than most solid state amps.

If one is going to use tubes, an amp like this makes a lot of sense. The output tubes are cheap and plentiful, long lasting, and MUCH better made than any current production tubes. The 1625 is a 12V 807 tube.

JP
jon.parkhurst@mac.com