Oh dear that doesn't sound promising... Well let me know what happens. The RCA 5654s have made a substantial difference over the Mullard 8100s that sounded quite thin overall.   I have also found that turning the amp up from 10 - 12 o'clock seems to make the treble louder but the bass almost...

QUESTION - will changing the opamp smooth out / tame treble?   I have received a set of RCA 5654's in the post today and although only a few hours on them whilst working I can hear notable difference over the Mullard 8100's. Far better bass definition and depth, more vivid bass if you like...

Thanks for the replies.   I am sat here listening to the set up again, using the set of Mullard M8100s and its not an unenjoyable listen by any means. I hear what you are saying about the Grados. The 325is was terrible in the first few days. After getting the Audiofire soundcard things...

It's the sibilance and highs that seem to stick out. I was listening to Flying Lotus's 'Cosmagramma' yesterday and I had to turn it off it was so screechy. I am half thinking it's the audio card. Although I was listening to it through a fairly decent music system tonight and it sounded great...

Please, anybody have any advice to offer?

Hello and thanks in advance for any replies... its all about harsh sounds...   I bought a Little Dot and so far have 16hours on it. I am listening through the following kit.   MackBookPro > Echo Audiofire2 24/96 using Audirvana > Mackie Big Nob > Little Dot 1+> Grado 325is (all 320kb...