Ruby 6550 Guitar Amplifier Power Tubes - Matched Quad Set POS Only Strong and secure leather ends

Strong and secure leather ends

Ergonomic lampshade knobs allow intuitive

Chrome die-cast tuners deliver stable tuning performance and long-term reliability

and XE20 will follow your changes in any Style you select

Stereo ¼” with direct mono/stereo switch

Ruby 6550 Guitar Amplifier Power Tubes - Matched Quad Set POS Only Strong and secure leather endsA refined update of the GE6550 with a rugged, straight bottle. All Ruby power tubes are matches using the Magic Parts matching procedure, and the plate current and transconductance matching measurements are labeled on the base of the tube. By matching these measurements, your amplifier's performance and life span is optimized.