The main reason for buying this amp was to see if the powere available at 600 ohms made any difference over the Bottlehead Crack. The DT 1350's on this amp with low impedance setting has bass that thinks its a big as anything else out there!! LOL. I can use this OTL amp with both high and lower impedances.drives the T90 and T1's very well and even the DT1350's at 80 ohms. Valhalla 2 is a complete re-imaging of Valhalla, with improved performance, higher output capability, lower distortion and output impedance Its tempermental with tubes, or I should say the tubes are tempermental at times.noises, pinging, microphonic etcīut once it settles in its a stellar amp.Ī great OTL amp that has morphed somewhat from the original Vahalla 2 If I had only high impedance cans this could be the amp to have.
I have to say its a great simple design that just works and works very well. I should say the "legandary" BH s touted by many as the OTL amp for high impedance amps. The result was a cancellation of the higher-order even harmonics by the inverting stages at a cost of slightly higher background noise. The design thought here was to build an O2 like amp that used inverting amplifier stages for the gain and output stages. Marvelous and "rare" amp for sure.only a few of them out there. I dont have pix of my Schitt Asgard (ss) or Schitt Lyr (tube).ĪGDR's Inverting Version of the O2.ODAC on the side. I have most of them on this site "somewhere".the DIY ones.
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