Originally Posted by Sorensiim
Take a good look at the Ibasso D12. Dual WM8740 with a killer single-ended (op-amp rollable) amp. I've seen a couple of guys posting in this thread that it's a very nice addition to the DX50
If you want a DAC/Amp combination with a different DAC chip than the WM8740 and where you can roll the OPamps why not try the Leckerton UHA-6S MKii.
The Leckerton has the CS4398 Cirrus Logic’s "flagship" digital-to-analog converter, although by all accounts the Amp is stronger than the DAC part.
It has Optical and coaxial S/PDIF digital inputs and is compatible with S/PDIF sources up to 24-bit/96kHz, so it can take the coaxial output of the DX50 at hirez.
As a DAC unit it also has USB in and is also compatible with the Apple for IOS 7 by using the Lightning to USB Camera Adapter to output digital audio from the iPhone 5 or 5S or IPad. (Yep you don't need a ALO anymore)
It has rollable Amps - it ships with 2xAD8160RZ but mine has 2xOP627 (tubey,warm sounding ones). It seems there are at least five to chose from on the website. I haven't rolled any yet.
This means with these two units I can do the following :
1. Dx50 AMP to earphones
2. DX50 line out to Leckerton Amp to earphones
3. DX50 coaxial out to Leckerton DAC/Amp to earphones
4. IPhone 5 to Leckerton DAC/Amp to earphones
5. Laptop to Leckerton DAC/Amp to earphones
That is a pretty strong/cool list of options.
It sounds good too. Via the Dx50 line out, I love the warmth of the OP627 which complements the clarity, separation and slight brightness of the DX50.