I got the Beyerdynamic A20 Amp to go with Explorer 2.

It definitely brings things up a notch.

I'm gonna try one more Amp though, I could not resist.

ifi iDSD Micro Black Label

This would replace my M2Tech HiFace that drives the DSP-5K's, the Explorer 2 and the Beyerdynamic A20 Amp. On Sale for $399.00

It is supposed to get MQA in a firmware update. Not that I', that concerned about MQA.

It will also Decode DSD. I don't expect it to sound better than the Explorer with A20, but I'd be thrilled if it sounds as good.

I've been using this new Head-fi.com website for a lot of research. The Explorer 2 is not even in there list. The Meridian Prime is there but not a single review.

There is a thread for the Explorer 2 though but not a whole lot of activity.

The iFi iDSD is #2 on that list. The Chord Mojo is #1 but I really like the features on the iFi and it has much more power for 600 ohm headphones.

Headphone Amps/DAC Reviews

- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2