Available Now at Northeast Music Center!
Restore the performance, response, and reliability of your MESA/Boogie Express Plus 5:50 with a properly matched replacement tube set built around the amplifier’s original tube complement. This complete retube configuration includes two MESA 6L6 power tubes and five MESA 12AX7 preamp tubes—the correct layout for the Express Plus 5:50.
The MESA/Boogie Express Plus 5:50 is a remarkably versatile amplifier, combining Clean, Crunch, Blues, and Burn modes with Multi-Watt™ power switching and MESA’s classic 5-band graphic EQ.
Like any all-tube amplifier, its feel and tone are directly influenced by the condition of the tubes inside it.
This set includes:
• 2 × MESA 6L6 Power Tubes
• 5 × MESA 12AX7 Preamp Tubes
That matches the factory tube complement specified by MESA for the Express Plus 5:50 Head and Combo.
The Express Plus 5:50 also uses:
5 × MESA 12AX7 preamp tubes.
These tubes play a major role in:
Input gain.
Channel voicing.
Overdrive character.
Effects-loop operation.
Phase-inverter duties.
And the overall feel of the amplifier.
When preamp tubes begin to wear, players may notice increased noise, reduced clarity, microphonics, inconsistent gain, or a general loss of immediacy.
Replacing the full preamp complement can help bring the amplifier back toward its intended operating character.
Tube wear doesn't always happen suddenly.
It often happens gradually.
An amplifier may begin to feel:
Less lively.
Less punchy.
Noisier.
Softer in the low end.
More compressed than usual.
Or less consistent from one playing session to the next.
Because those changes happen over time, many players don't realize how much performance has been lost until fresh tubes are installed.
A complete retube can be one of the most effective maintenance upgrades for a well-used tube amplifier.
One of the first areas players may notice power-tube wear is clean performance.
A tired set of power tubes can begin to sound softer or more compressed than expected.
Fresh 6L6s can help restore:
Clean headroom.
Low-frequency control.
Transient attack.
And overall authority.
That matters especially in the Express Plus 5:50, where the Clean and Blues modes depend heavily on dynamic response.
Not every tube replacement has to begin with a failure.
For working players, studios, churches, touring musicians, and anyone who depends on their amplifier regularly, a complete retube can also be part of preventive maintenance.
Having a fresh set available means you're prepared before a tube becomes noisy, microphonic, or fails at an inconvenient time.
At Northeast Music Center, we consider that especially worthwhile for older discontinued MESA amplifiers that players intend to keep in service for many years.
Northeast Music Center is a full line Music retailer located in Northeast Pennsylvania- We are an Authorized Mesa Boogie Dealer and purchase these products direct from MESA HEADQUARTERS IN PETALUMA CALIFORNIA. We do not obtain our MESA AMPLIFIERS or other MESA products from "jobbers" or other dealers. Our MESA AMPLIFIERS AND CABINETS come to you in the factory boxes with factory packing material. We will, upon request, and also randomly, open the box prior to shipping to check that all contents are included and that no damage has been found in shipping from MESA to our Store location. Northeast Music Center does reserve the right to sell these products in our store to daily walk in customers. It is our goal to always have this product in stock and if for any reason we sell out, we will reorder immediately as long as this MESA AMPLIFIER is currently produced for resale by the company. We will order the amplifier in a ample quantity to fill your order. It is our goal to make your experience a good one; We invite you to ask any and all questions about this product. Please do not purchase this item if you can not pay. This is a new Mesa with full 5 Year factory warranty to the Original Owner. 3 Year Warranty on Speakers.
