Matchless DC-30 Series by travisbrown
This amp has been on my covet list for years. A while ago an opportunity to purchase a 2-12 arose (on condition from my wife that I get rid of a bunch of other amps - she's all about consolidation.)
When I tried out the amp, I kept it at a polite level in consideration of the seller's neighbours. He looked at me and said, "It sounds better like this." and turned it up to about 6. The first thing I noticed was that the amp didn't have that harshness that one comes to expect from A/B class 1-12 amps. The Class A circuit keeps this thing sounding smooth all the way up.
The controls for the DC 30 are simple. Two channels - 2 x 12AX7 with bass and treble controls, and an EF86 channel with a 6 position tone "preset" control and a variable HF cut.
Both of these channels run through a bypassable push/pull master volume. It's fun if you accidentally bump that volume control off while you are playing.
The 2-12 configuration features a "Matchless modified" pair of dissimilar Celestions: G12H30 and a Greenback 25. You can close mic one or both, or back off a bit and capture both for versatile variation in tone. In a mix it adds for nice broad sound when each is hard panned.
A somewhat quirky thing, but understandable given the discrete topology, is the EFX loop for each channel. I haven't quite figured out how one might use the same EFX for both channels without some fancy switching, unless you were jumpering the channels.
One thing I've found is you make a whole bunch of new friends once you own a Matchless. On the downside, once you get a Matchless and a good guitar, there are not many more excuses you can make for your playing ability.