Sorry but 2% won't cut the mustard in my opinion, based upon today's listening test. I would imagine that a 50% increase might though. I compared this Amp against a Lehmann Audio Amplifier from way back - the "Black Cube" and the Lehmann makes the THX AAA 887 sound like an inexpensive FM...

Just had a listen to one with my Musical Fidelity DAC and compared it to my Lehmann Headphone Amplifier - the Lehmann knocks socks off the THX I'm afraid. I plugged in Beyerdynamic Amiron 250 Ohms Headphones but could have used others besides such as Sennheiser HD660S or AKG K702, Beyer...

Am not surprised really as the UK Distributor pulled out in 2021 if I recall. It sounded rather thin and tinny to my ears - which might suit anyone that has never heard modern day Hi-Fi Equipment through decent Headphones etc.

Bought one of these several months ago along with a few 6N2P-EB Valves and had about 3 listens, comparing it to a Little Dot MK4 and my "Secret" all Transistor Headphone Amp that sounds awesome. The Mistral sounds very thin and weedy in comparison to the other two Headamps. Maybe needs a lot...

Forgot to mention that I usually listen via a Headphone Amplifier or Integrated Amplifier and that I am a experienced listener - however I do not want to hear about STREAMING or PORTABLE Players such as phones and such like - I much prefer listening to quality music via CD and real...

In order to provide this info it's obvious you know what you are talking about and therefore in order to save me a lot of time and trouble/expense I am hoping you could advise me which headphones to buy as follows;- I now have Tinnitus, so my Grado SR325iS Headphones sound great but make Piano...