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I have a MINT passive preamp (line stage) for sale, due to an upgrade in my system. Music First Classic V2 Copper , date 24/10/2016, serial number 7156 It is in immaculate, mint state, stunning! see the single ended/balanced in and outputs on the pictures. Looking for 1.800,- GBP, a bargain for one of the best audio devices i heard in my live HUGE PRICE DROP ONLY 1.500,- pounds, FREE SHIPPING Ships from Brussels, Belgium, where I live.
I've been quite happy with the performance of my Audio Innovations 300, but an Audio Innovations the First power amp showed up for sale locally and I couldn't resist. This is the 4x ecc88 model, so the gain is unwieldy. I'm temporarily using it with my Chord Mojo, which is able to give a clean signal even at very low volumes. However, I much prefer the glare free treble of my Audio Note Dac 1, or even the Metrum Octave from my headphone rig. The previous owner used a Tisbury preamp for volume control and it seemed like a neat solution. However,AFAIK, the AN DAC likes to see an input impedance of at least 100 kOhm. The Tisbury spec sheet states a 10 kOhm for their preamp. So, my question is this: Is it possible to get, or make, a passive preamp with as much as 100 kOhm input impedance? Or might there be a different solution to this apparent incompatibility of the AN DAC and AI power amp? edit: It appears my DAC has been updated to 1.2 specs, with Cca valves(ecc88/6922) and a resulting reduction in output impedance from 5 kOhm to "just" 1 kOhm. So the Tisbury 10 kOhm input impedance may suffice. However, I suppose 20 kOhm would be preferable. Would anyone know of a passive pre with upwards of 20 kOhm input impedance?
I need to have a “spring clean” ! I purchased this from take5 in 2014 and have been using it quite successfully with a variety of valve power amplifiers in my system. However system changes have meant that it is now surplus to requirements and the time has come to part company. I believe this to be a factory-built example and the photographs demonstrate that it is in excellent condition. It has 3 x RCA or 2 x XLR inputs, 1 RCA or 2 x XLR outputs and two gain settings. I have only used RCA in/out so cannot vouch for the XLR connections. Measurements - 36 cm wide x 32 cm deep (including posts) x 12 cm high (including feet). Volume control is stepped with 24 steps. I do not know which make of transformers are fitted. I have taken one out but there is no name/identification of any sort on it. Maybe someone can identify them from the photograph ? From Gizza's post below " the transformers are the Silk Audio Supermalloys, I came across Brian's original sale posting whilst looking for reviews and info. DIY HIFI SUPPLY introduced these as their top of the range when Stevens and Billington stopped supplying theirs to other manufacturers. The reviews I read said they were not far behind the S&B at all." I am looking for £400 plus p/p at cost, although I would much prefer collection from Linslade, Beds, LU7. I could demonstrate then if required. http:// http:// http:// http:// http://