Dynaco VTA ST-120 60 WPC stereo TUBE amplifier

UPDATE:  May 28, 2017 - Hooked everything up again today for a wonderful listening session. This amp sounds amazing!  I believe the lucky new owner will be very happy!

Dynaco VTA ST-120 60 WPC stereo TUBE amplifier - This Kit was purchased from Bob Latino and built in Dec. 2010.  It was used for about 3 months and has been in storage ever since.  All the tubes needed will be included as seen in the pictures.

Here are the details from the original eBay website:

Up for Buy It Now is the Dynaco VTA ST-120 stereo tube amplifier KIT. This is the 60 watt per channel version of the upgraded Dynaco VTA ST-70 KIT. The ST-120 kit now comes standard with a 16 gauge heavy duty stainless steel chassis to better support the three transformers. (See comparison photo of the new 16 gauge chassis and the older 18 gauge chassis) This amp contains all new parts. There are no recycled parts from any original Dynaco tube amplifier. It differs from the ST-70 kit in the following ways ..

1. The VTA driver board, as used on the ST-70, has a number of modifications for use on the ST-120 to better drive 6550 or KT88 output tubes.

2. The ST-120 power transformer has the same footprint as the PA-060 transformer found on the original Dynaco ST-70 amplifier but has a 2.7 inch stack lamination and puts out 410-0-410 volts on the secondaries @ 450 milliamps. This transformer weighs about 5 pounds more than an original PA-060 power transformer. Over 490 volts DC are seen on pin 3 (plate) and pin 4 (the ultralinear screen tap) of the output tubes. The rectifier line is 5 volt @ 5 amps.

3. The two output transformers used on the ST-120 are USA made and feature interleaved/layer windings with M6 silicon steel grain oriented laminations. They have 4200 ohm primaries and 40% ultralinear screen taps. They are 3 7/8" tall, 3 1/4" wide and 3 1/8" deep (about 1/2" taller, 3/8" wider and 1/4" deeper than a stock A-470 output transformer). Each output transformer has 4, 8 and 16 ohm secondaries and weighs about 2 pounds more than a stock A-470 output transformer as found on the ST-70. (See comparison photos ..)

4. The amp uses TWO C24-X chokes which together can handle 480 milliamps of current flow.

5. This ST-120 features a Supplementary Cap Module or "SCM" which adds another 165 Mfd of power storage. The power supply also uses a set of wideband bypass capacitors for ESL reduction.

6. The fuse is a 5 amp slo-blo fuse instead of a 3 amp slo-blo as on the ST-70

NOTE - 6550, KT88, KT90, KT100 or the new Tung-Sol KT120 output tubes may be used with this amp. Recommended bias voltage is .550 volts DC for each output tube which provides a bias current of 55 milliamps per tube. The other tubes are 3 X 12AT7 and one GZ34 or one solid state rectifier. 

Here's an old eBay link that has the original info:

http://www.ebay.com/itm/Dynaco-VTA-ST-120-60-WPC-stereo-TUBE-amplifier-KIT-/300901067257?nma=true&si=x9Br0h7nCCkOasP8svV3Ncqo554%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557