From Swart : If only words could actually convey sound fully; they always fall short to some extent, and that's where I stand with the Space Tone Atomic Jr, the latest amazing, soulful little amp from the hands of Michael Swart. The new ST-Atomic Jr starts off with the heart of our ever-popular ST-6V6se with the addition of a year in the making, triode reverb stage utilizing a dedicated 12DW7 fed into a nifty spring tank for surprisingly BIG REVERB, especially for a cabinet this size. Actually, for ANY size cabinet. The tonal variations and REVERB in this little monster must be be heard to be believed. Most amps this size attempting reverb and big tone tend to be underwhelming. Not so with the 14lb Class A ST-Atomic Jr. Specifications 5W CLASS A ~ w. ReverbSingle-Ended Output - Zero Negative Feedback100% Tube Circuit - GZ34 or 5Y3 Valve RectifierBig Swart Tube Reverb via 12DW7 & Spring TankHot and Clean mode SwitchPowered by choice of 6V6 or 6L6 (shod w/6V6)JJ 12AX7 - JJ 12DW7 - JJ 6V6GT - JJ GZ34 RectifierPoint to Point Hand Wired CircuitCathode Biased (no need to bias)Carbon Comp Resistors ~ Mallory CapsCloth Hook-Up WireHeaters referenced to groundAll Swart Amplifiers employ Star Grounding4 ohm 1/4" Out - Drive other Speaker/CabinetCan drive 8ohm LOAD without issuesSwitchcraft 1/4 inch input and outputCTS PotentiometersCustom High Quality USA Built Swart Spec IronSpeaker: 8" Weber Signature Smooth Cone ~ 4-8ohmFinger-Jointed, solid Pine Cab w/ Lacquer Tweed CoverVintage Jewel Lamp ~ Circuit Fuse ProtectedDimensions: 13 3/4T x 13W x 7 1/4 D @ 14lbs