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Justin_1
29
Dec 30, 2016
Got one of these to day. In the US on 110v. Used it all day. worked great. No issues. Tried a number of different ohm headphones. None over 100. worked fine with out issue. If anything changes I'll reply or edit my post. the box it came in did clearly say on the outside "110v Only" Though it did come with a 220/240 volt AU/EU plug. Kind of stupid... yeah. I feel bad for the people that didn't notice, or box wasn't marked. Also have a Mullard Pre-Amp tube on order and some Russian gold grid's on order. to go with the massdrop AKG K7xx headphones. I'll update later once built out.
Justin_1
29
Jan 14, 2017
Justin_1Noticeable improvement on the tube switch out. The Mullard K-61 tube switch was first... The low mids and bass became clear and un-muddled (but wasn't noticeable on 80's and classical music to begin with). The Russian 6S19P-V (6C19P-B) Gold Grid tubes increased my output a bit all around. Also removing a hiss and hum that was barely noticeable to begin with(only noticeable after about a hour of usage originally with the Chinese tubes). To which I have dead silence now even if I max out the volume. Tubes were purchased from Ebay.
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Justin_1
29
Mar 19, 2017
Justin_1Couple months later. This amp is still rocking solid. No issues. Not a single one. Mostly used for USB/Computer audio. Still rocking the Mullard pre-amp tube.
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