Mesa Boogie Mark IIB 1x12 Combo - Used (1981)
This is a vintage Mesa Boogie Mark IIB, a foundational model in the evolution of the modern boutique amplifier. Manufactured in 1981 (Serial 9421), the Mark IIB holds a special place in Mesa history as the first guitar amplifier to feature a tube-buffered effects loop. Building on the high-gain cascaded preamp design of the Mark I, the IIB introduced more sophisticated foot-switching capabilities and a more refined lead channel, making it one of the most versatile workhorse amps of the early 1980s.
This 60-watt model features the classic black Tolex finish (BLK) and is a prime example of the "Fender Princeton on steroids" philosophy that Randall Smith pioneered. It delivers legendary glassy cleans and thick, sustaining lead tones that remain articulate even at high gain settings. This era of Boogie construction is famously robust, featuring hand-wired circuitry and heavy-duty transformers that have made these amps staples on professional stages for decades.
This amplifier is in very good condition and has been professionally tested in our shop. All pots, switches, and the spring reverb are fully functional. Whether you are looking for the definitive Liquid Lead sound or a high-headroom pedal platform with a legendary mid-range punch, this Mark IIB is an exceptional vintage choice.
Specifications – Model: Mark IIB 1x12 Combo – Year: 1981 – Serial Number: 9421 – Power Output: 60 Watts – Power Tubes: 2x 6L6 – Preamp Tubes: 12AX7 (x4), 12AT7 (x1) – Features: Tube-Buffered Effects Loop, Spring Reverb, Slave Out – Controls: Volume 1, Treble (Pull Shift), Bass, Middle, Master (Pull Bright), Lead Drive (Pull Lead), Lead Master – Condition: Very Good. Professionally tested and fully functional; clean cosmetic condition for its age. – Included: Attached Power Cable.
About Us + Shipping Every amplifier we sell has been professionally tested and serviced by our technician to ensure it is fully functional and safe for use. We pack each order with care and ship promptly. Mill River Music is a full-service music store located in Western Massachusetts. We are proud to offer new, used, and vintage gear, plus repairs and friendly advice. International buyers are welcome - please message us for an accurate shipping quote before purchase.
