An excellent amp that provides you wide range of tones from clean to crunch and even further to extreme high gain. The channels are distinctively different and provide versatility for rehearsal and gig playing. I love especially the high gain tones of the channel 2. You can easily get to metal territory, for example Metallica tones. Different switches provide some adjustment options and included footswitch allows you to change channels. Bedroom volume levels are achievable with the master volume, however I use a secondary master volume in my effects loop to attenuate it.
If I had to complain about something, I would move the presence switch from the back to the front panel. Additionally, standby mode would be nice for on-off switching in the case of a tube amp. And finally, even though it provides amazing tones from EL84 power tubes, I have to admit that I slightly prefer the lower gain vintage plexi tones that I get out of my Marshall SV20h over the JEL-20's channel 1 (plexi channel). Maybe its the EL34 tubes in the Marshall, but SV20h sounds a bit fuller, brighter and harmonically rich. Still, I give JEL-20 a 5 for the tone.