2014 Mesa Boogie – Express 5:50 plus – ID 3873

Mesa Boogie revises the popular Express models and adds valuable features that absolutely deserve the "+".

Developed and manufactured in California, USA
Improved clean mode with optimized signal-to-noise ratio Patented multi-watt power setting, now per channel and in 3 levels (5/25/50 watts)
New depth control 5-band graphic EQ (known from the Mark V)
New solo boost (adjustable and footswitchable) New 4-way footswitch for channels, reverb, EQ and solo
Tubes: 2x 6L6 power amp, 5x 12AX7A preamp 2 complete independent channels (channel 1: clean/crunch, channel 2: blues/burn)
Full tube spring reverb Serial FX loop External switching inputs for control via midi switcher Black Taurus Tolex including 4-way footswitch and protective cover.

The amp has two front panels, currently one is fitted with smooth Tolex, the original one is included.
Top maintained condition, with fresh service.
You can find a competent test here at Gitarre&Bass:

Mesa Boogie Express 5:50 Plus
Electric guitar case amplifier, two channels
Made in USA
Technology: all-tube design (semiconductors in the FX path), silicon rectification
Tube configuration: multi-watt output stage with 2 x 6L6GC in three operating modes: Class AB push-pull (50 watts), Class A push-pull (25 watts), Class A single-ended (5 watts); preamp 5x 12AX7
Power: max. approx. 50 watt
Housing: birch plywood (manufacturer's dimensions, approx. 22 mm), partially open at the back, vinyl cover, protective caps on all corners, rubber feet, carrying handle on the top, fabric front cover included
Chassis: sheet steel (approx. 2.2 mm), suspended, tubes secured with sheet metal sleeves and spring clips, protective grille on the 6L6GC
Connections: Front: input, footswitch; rear: 3 x speakers (2 x 4, 1 x 8 Ohm), (FX) send, return, footswitch (DIN), 4 remote switch sockets (solo, EQ, channel, reverb), 2 x cinch (reverb send, return), mains socket
Controls: Front: per channel: Gain, Treble, Mid, Bass, Reverb, Master; (EQ-)Preset-Depth-1, -2, Solo (-Volume) - 5-Band Graphic EQ
Switches/buttons: Front: Channel-1-Clean/Crunch, Channel-2-Blues/Burn, EQ-Status-Ch.-1, -2 (On, Off, Footsw.), EQ-Mode-Ch.-1 -2 (Sliders/Preset), Channel-Select, Power-Select-Ch.-1, -Ch.-2 (50, 25, 5 Watt), Power (AC), Standby
Effects: Spring reverb w. tube amplification
Loop-in path: yes, serial
Weight: approx. 14.5 kg