The pre-amplifier casing is made of marble and finewood, the chassis – of aluminum alloy. The casing elements are plated with 24Ê gold. The circuit is drawn up on a single valve 6E5P, class À. The whole of layout is made by 99.997% Ag silver wire. The power unit makes use of a high-vacuum rectifier and a L-shape filter throttle inlet. Filter capacitor - Blàck Gate. The pre-amplifier has 4 outputs to manage supply of AC power to monoblocks ER 520SE, ER 520PP. Remote control panel allows for volume control and inputs switching. A MUTE key is also available.
Un amplificatore a valvole con un triodo da 50w?:
While not a lot is known about Eraudio, a brand new company from Russia, one of its principals was on hand to give us a look at some of their rather large single-ended integrated amplifiers. Of particular interest was a new output tube (which isn't really new, but was used by the Russian military for years and with reported great reliability…although I don't think we'll be seeing the U.S. Air Force implementing them into the cockpits of any F-15 or F-17 anytime soon) that reportedly puts out 50 watts in triode mode. The tube in question (model number escapes me) is almost four times as large as the venerable 6550 and rather on the heavy side.
