Monoprice 611815 15Watt, 1 x 12 Guitar Combo Tube Amplifier with Celestion Speaker & Spring Reverb Superior guitar tone and flexibility using this 15-Watt, 1x12 Guitar Combo Tube Amplifier with Celestion Speaker & Spring Reverb from Monoprice! Features a 15-watt tube power amplifier and a Celestion brand speaker. Amplifier Load Range: 8 ~ 16 ohms Uses three ECC83/12AX7 preamplification tubes and two EL84 power tubes for the amplifier section, plus a Celestion Red Truvox 1215 speaker. Handles frequencies between 80Hz and 10kHz, with hum and noise -75dB below the rated power and 0.5% total harmonic distortion. The cabinet is ported in the rear and features a leather handle, cloth speaker grill, and a cream-colored, textured, synthetic leather exterior with chrome corner guards