If not, you may want to check out a Hardwire CM-2 or Joyo Ultimate Drive. Both of those are in the ballpark and can be had for less than $50.
I'm pretty much in A strict non acquisition stage now, gotta work with what I have. I remember looking at those joyo pedals online a few years ago, looked like they had a copy for just about everything with largely favorable reviews, but low price influences that too. Is hardwire a similar type situation? At the time I was looking for guitar application, guess I settled on the metal muff, which was really killer with valve jr into Mesa 112. Too bad it is not quite enough volume for band use, though maybe with the transformer mods to eek it up to 10w it might start to cut it. I actually used the valve jr into swr Goliath II jr with bass a few times for low volume practice vs electric drums and small modeling guitar amp. THEY had to resort to artificiality, I just had the real thing scaled down, it was pretty killer, couldn't even hit saturation because it had to be "that" quiet. This was where the modeling amp, or even the rumble overdrive, would have come in handy, but it would have to be like a 40 or 25 when you have to be "that" quiet.
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