Essentially I am very happy with my DX50 & Leckerton UHA-6S Mk ii with arguably one of the better set of OPamps the OPA627s going into Super fi Pros or Sennheiser HD 600.
I had decided to try an alternative amp and the opportunity of a secondhand D12 or PB2 came up. I decided against the PB2 because to be frank I didn't understand this balanced out stuff and it seems complicated and potentially pricey. The D12 with Topflight kit sadly never materialised so I am back to square one and not sure what to do.
I think I want the flexibility to roll my opAmps for fun, inquisition etc. rather than rolling the Amplifier itself. I know that you can roll amps with the Leckerton but out of Nick's choices, I seem to have got the best (or at least the most expensive).
So I am back to finding an Amp with OPamps to roll and it still seems to point to an Ibasso one. The Fiio e12DIY seems to be too small to give enough flexibility and the e11 I saw really didn't impress me.
So some thoughts from others would be helpful:
1. What other headphone amps would allow easy amp rolling apart from Ibasso?
2. A more powerful amp seems to increase the range of OPamps that one can use? Is this true? Does it matter?
3. Is Balanced really better than single ended? Is it relatively cheap to buy the cables etc. to make my headphones work properly
4. ibasso PB2 or D12 - for those who have heard both, which one?. Is SE out of the PB2 inferior to the D12?