FaH33m said:^ The Audinst HUD-MX-1 is probably one of the best DAC+ amp Ive tried under 10k . Very very neutral .No signs of coloration at all .Garbage in , garbage out . More than enough power to drive my D5000. Should easily handle anything upto 300 Ohms ,IMO .
If you prefer a sightly darker sound , you could get that with some op-amp rolling experiments. I tried out BB-OPA2111KP,BB-OPA2032P and few others . Of which the 2111 was slightly darker but had a little more bass as well so I went back to the stock one .
It was Chaos' feedback to Gautam @ PN which made me try out the MX1 and buy it You could maybe audition his MX1 if you are in the same city .