So, the new title of this forum has me a little worried given that I am not using my beautiful new amp for headphones as yet, but my K1000s will arrive this week and I will be in compliance then!
I got this amp through Audiogon, and it is in fabulous shape. The one modification that I am aware of is the disabling of the volume pot. For now, therefore, I have it connected to my TacT 2.2XP as a preamp and volume control. The source is an Onix CD-1 and it is playing on 70's vintage Klipsch Heresy speakers. Here are a couple quick pics of the temporary setup atop the very fine Moth crate (and full resolution pics are in my member photo gallery):
I just got her going this weekend and I am already falling in love with the sound of the 300B, especially these TJ Premium Mesh Plates! I will have to hear more before really saying much about the sound. For now, I can say that the background is silent and black, the beautiful mids and vocals of the 300B are well presented, and the bass is deep and very well-defined. The other thing about this amp that is already apparent, is the speed and dynamics. I am going to spend a lot of time listening to this wonderful amp, and really cannot wait for the K1000s to arrive.
Here is a random selection of pics with the cover on and off:
I hope to have more to say about the Moth after some more listening time. It is a shame that they are not in production, and that they are in short supply. Still, they can be had and certainly can be enjoyed!