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Billyham

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  1. Item: Dynaco VTA ST-120 Valve Amplifier Location: Sydney 2076 Price: $2,450 Firm Item Condition: Brand New, one week after assemled and tested Reason for selling: Upgrade to VTA M125 Mono Blocks Payment Method: Pickup (20 Kg), Cash only Extra Info: I purchased the amplifier kit from Bob Latino from the U.S. (paid a lot for shipping) with full set of the tubes (3 x Sylvania 12AU7, 1 x TungSol 5AR4, 4 x Soltek6550WE), capacitor upgrade (4 Power supply and 4 hand matched Russian K42-Y PIO coupling caps) and the 21 steps attenuator. Power transformer is 240V. OFC AC cord fitted with Rhodium plated Furutech IEC inlet. The Drive Board Cover is self made with pure copper plate and is grounded to the chassis as EMI shield. Wired here in Syndey by myself with solder contains 2% Ag (silver). Tested and is runnung perfectly. I like it so much that I am now looking at upgrading to the VTA M125 Mono Blocks from Bob Specifications of the ST-120 Amplifier with VTA Driver board Power output . . . . . . …… 60 watts RMS per channel at 1 KHz at less than 1 % THD with both channels driven in PENTODE or 32 watts RMS in TRIODE with both channels driven Frequency response . . . . 10 Hz to 30 KHz +/- .1 dB at 1 watt Power bandwidth . . . . … 17 Hz to 30 KHz +/- .3 dB at 60 watts Distortion . . . . . . ………. Less than .15% THD from 20 Hz to 20 KHz at 1 watt, less than 1% THD at 60 watts 20 Hz to 20 KHz IMD ………………………… Less than .45% (19 Khz and 20 Khz) at rated power Hum and noise . . . . . ….. More than 90 dB below 60 watt output Sensitivity . . . . . . ………. 1.1 volt in for 60 watt output Bias setting …………… .500 volts DC per each KT88 or 6550 output tube Feedback ………………… 13 dB total loop feedback Tube complement . . . . … (4) KT88 or 6550 or KT120 (3) 12AU7/12BH7/5963/5814/6189 (1) 5AR4/GZ34 Size . . . . . . . . …………. 13" x 9.5" x 6.5" Weight ……………………. 38 pounds (shipping weight = 45 pounds Please see detailed information and user reviews here: http://www.tubes4hifi.com/bob.htm McIntosh MC275 performance at 1/5 of price: http://dynacotubeaudio.forumotion.com/t1930-comparing-my-vta-st-120-with-my-mcintosh-mc275 Photos: Advertisements without photos of the actual item will not be approved.
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