Try a Douk E6 in front of it with the upgrade that is referred to in certain posts.
I do think the Budget Class D and Budget DHT Pre will find a very pleasing synergy.
I put a few friends onto the E6, and one is after a period of trial, now seriously considering it for being a replacement for their Django TVC. This was unexpected, as I thought of the E6 as a very affordable dipping of ones toes into a DHT type Pre Amp.
The E6 was only presented to the group of friends, as another friend in the group, who is a very competent EE, has investigated quite a few £000's in another UK based EE's DHT Pre Amp Design, that was getting good appraisals during the Honeymoon Period of its use.
Not heard the DHT yet in any of the types now available, but do know the report on the UK based EE's design has claimed it has transformed SS Power Amp's relegated from the Top of the Listing for their favour to a whole new level of presentation that are very attractive when experienced.