Vox AC4 1x10 Classic Red Limited Edition Tube Guitar Combo Amp Power: 4W (tube) Tubes: one 12AX7 (preamp); one EL84 (power amp) Speaker: 1x10" Celestion VX10 Controls: gain, treble, bass, volume Limited edition red skin Dimensions: 13.7" x 8.4" x 14.7" Weight: 19.84 lb. The AC4C1RD delivers the signature VOX Top Boost tone in a portable, compact amplifier Gain control, Bass and Treble tone controls, and a Master Volume allow any player to easily recreate the historic VOX sound Using a Class A, all-tube amplifier, the AC4C1RD utilizes a pair of 12AX7 preamp tubes, and relies on a single EL84 Power tube to deliver 4 Watts of power through a 10" Celestion VX10 Speaker Adorned in the rare and vintage look of rich Classic Red vinyl paired with the iconic diamond grille cloth, the VOX AC4C1-RD is sure to be an instant classic