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JULY 31, 2025 INTERVIEWS
Aspen Pittman: Behind the Gear with Groove Tubes
The name Aspen Pittman is synonymous with vacuum tubes. But it's one thing to hawk a product, and another to understand the physics behind its performance. While working as a salesman in the first Guitar Center store, Pittman noticed that players (and techs) didn't really know why there were wide sonic differences between identical tube amps. He suspected the tubes, but there was little known then about matching power tube pairs or selecting prime preamp tubes for replacement. His curiosity eventually led to inventing a whole new standard for matching guitar amp tubes — one that works. Today, you'll hardly find a professional guitarist who doesn't have a set of Groove Tubes in his amp. Likewise, Pittman's Groove Tube uniquely designed pro audio products are found in world-class facilities around the globe. We caught up with Aspen Pittman at this year's TapeOpCon. We wanted to know about a little more behind the gear...