The Mesa/Boogie Express 5:50 Combo 2-channel tube amplifier goes beyond what you'd expect from even a feature-laden Boogie amp! This compact combo actually turns into a completely different beast with the flip of a switch — You can actually choose between a 50-watt Class A/B power section and Class A 5-watt power! This flexibility makes the 1 x 12" Express 5:50 Combo perfect for both loud live work and and "small amp" recording! Of course, being a Mesa/Boogie, this amp comes loaded with tons of great features for a huge range of tones; get onboard the Express 5:50 Combo and hang on! - The best of both (power section) worlds - A tone-shaping, air-moving beast, packed into a convenient combo - Wouldn't it be great to be able to use the same amp onstage that gives you rich, "small amp" tone in the studio? Thanks to Mesa/Boogie, you can! The Express 5:50 and 5:25 combos each feature four inspiring modes and two completely different power configurations, spread across two fully independent channels. Are you a tonal traditionalist? Select Clean and Blues for your two footswitchable sounds. If you're addicted to gain, choose Crunch and Burn. Then stand back as the well-mannered soul of Dr. Most important is the classic authenticity of all these iconic tones. No matter what your stylistic destination, the Express will take you there — fast. - The best of both (power section) worlds - Up front, that number "5" indicates the low power, single-ended magic of pure Class A. The "25" and "50" refer to the rated push-pull (Class A/B) output. Together, these make up Duo-Class, Mesa/Boogie's new patented new power circuit. It's the first to offer both single-ended and push-pull configurations in the same amplifier. - A tone-shaping, air-moving beast, packed into a convenient combo - Each channel is further equipped with its own Contour depth control for added shaping that's both assignable and footswitchable. Used subtly, Contour adds a halo of depth and chime to gleaming clean sounds. Higher Contour settings, especially in Crunch and Burn, take you into Recto turf, which is tight, huge and menacing. - Mesa/Boogie Express 5:50 Combo 50-/5-watt Tube Combo Amp Features:Open-back combo1 x 12" C90 speaker - All tube: 5 x 12AX7A, 2 x 6L6Switches from 50-watt Class A/B operation to 5-watt Class A operation - Fixed bias for consistent performance - Two fully independent channels with four style modes - Independent Gain, Treble, Mid, Bass, Reverb, Master. and Contour controls per channel - Footswitchable Variable Contour Control on each channel provides EQ from one rotary control - All-tube long-spring reverb - All-tube effects loop3-button footswitch (Channel 1/2, Reverb, and Contour)Slipcover included - The Mesa/Boogie Express 5:50 Combo tube amp makes a perfect go-to rig for stage and studio!