Available Now at Northeast Music Center!

MESA/Boogie Tube Replacement Set for JP-2C John Petrucci Signature Amplifier

Restore your JP-2C to the performance, response, and reliability MESA intended. This complete MESA/Boogie replacement tube set provides the correct complement of four matched 6L6 STR-445 power tubes and five 12AX7 preamp tubes for the John Petrucci Signature JP-2C.

The MESA/Boogie JP-2C is an exceptionally sophisticated high-performance tube amplifier, and its tubes are fundamental to everything the amplifier does—from its articulate clean response to the tight, aggressive gain and singing sustain that define its lead channels.

When the time comes for a complete re-tube, using the proper MESA replacement tubes removes the guesswork.

This complete JP-2C replacement set includes four MESA 6L6 STR-445 power tubes and five MESA 12AX7 preamp tubes, providing the full nine-tube complement required by the JP-2C. Current MESA replacement-kit listings confirm this exact configuration, and MESA's JP-2C manual confirms four 6L6 power-tube positions and five 12AX7 preamp positions.

Available from Northeast Music Center, this is the straightforward solution for JP-2C owners who want to refresh the amplifier with properly specified MESA tubes.

COMPLETE JP-2C REPLACEMENT SET

• Specifically configured for the MESA/Boogie JP-2C John Petrucci Signature amplifier
• 4 × MESA 6L6 STR-445 power tubes
• 5 × MESA 12AX7 preamp tubes
• Complete 9-tube replacement set
• MESA-selected power tubes for compatibility with MESA's fixed-bias amplifier design
• Restores worn power and preamp tubes in one complete service set
• Suitable for both JP-2C head and rackmount amplifier versions using the same tube complement
• Genuine MESA/Boogie replacement tubes

FOUR MESA 6L6 STR-445 POWER TUBES

At the heart of this replacement set are four MESA STR-445 6L6 power tubes.

MESA describes the STR-445 as providing a tight and articulate low end, balanced midrange, and a clear top end designed to cut without excessive harshness.

Those characteristics are particularly well suited to an amplifier such as the JP-2C.

The JP-2C is capable of tremendous gain, but one of its defining characteristics is its ability to retain clarity and definition.

Low notes need to remain controlled.

Fast passages need to stay articulate.

Lead tones need harmonic richness without becoming undefined.

A properly functioning power-tube section is an essential part of maintaining that response.

FIVE MESA 12AX7 PREAMP TUBES

The set also contains:

5 × MESA 12AX7 preamp tubes.

These tubes handle multiple critical functions throughout the JP-2C's signal path.

According to MESA's official JP-2C tube diagram, its five 12AX7s perform duties including input and gain stages, the effects-loop return, reverb circuitry, and the driver/phase-inverter stage.

So replacing the complete tube complement isn't simply about replacing the four large power tubes.

The preamp tubes are equally important to the amplifier's gain structure, noise performance, dynamics and overall response.

WHY RE-TUBE THE COMPLETE AMPLIFIER?

Tubes are consumable components.

They don't necessarily fail all at once.

Instead, an amplifier can gradually begin to lose some of the qualities it had when the tubes were fresh.

You may notice changes in:

Punch

Clarity

Headroom

Gain character

Low-frequency definition

Noise levels

Dynamics

or overall consistency.

Because these changes can occur gradually, players sometimes don't realize how much the amplifier's response has changed until fresh tubes are installed.

A complete replacement set gives you the opportunity to refresh the entire tube complement at once.

DESIGNED FOR MESA'S FIXED-BIAS APPROACH

One of the advantages of genuine MESA replacement power tubes is compatibility with MESA's established fixed-bias design philosophy.

Rather than requiring the player to select random power tubes and then adjust the amplifier around them, MESA tests and selects tubes to operate within the appropriate performance parameters for its amplifiers.

For a sophisticated amplifier such as the JP-2C, that simplicity is valuable.

Install the correctly specified MESA tubes and keep the amplifier operating as designed.

MESA's own JP-2C manual specifically instructs owners to use MESA/Boogie tubes when replacement becomes necessary.

THE JP-2C DESERVES THE RIGHT TUBES

The JP-2C isn't an ordinary amplifier.

It was developed in collaboration with John Petrucci around one of the most coveted amplifier platforms in MESA history—the Mark IIC+.

Its ability to deliver tight low-frequency response, enormous gain, complex harmonic content and exceptional articulation places significant demands on every part of the signal chain.

That includes the tubes.

If you've invested in a JP-2C, a proper tube replacement set isn't the place we'd recommend experimenting simply to save a few dollars.

At Northeast Music Center, we'd rather see the amplifier equipped with the tubes intended for the job.

100-WATT AND 60-WATT OPERATION

The JP-2C's four 6L6 power tubes also play an important role in its selectable output operation.

MESA's official tube diagram identifies:

100 Watts — V6, V7, V8 and V9

60 Watts — V8 and V9.

That makes proper power-tube performance especially important.

Whether you're taking advantage of the full four-tube 100-watt configuration or operating the amplifier in its reduced-power mode, the power tubes remain a fundamental part of the JP-2C's response.

ONE COMPLETE SET — NO GUESSWORK

That's ultimately the biggest advantage of purchasing the complete JP-2C replacement set.

You don't have to determine how many tubes you need.

You don't have to mix different power-tube types.

You don't have to wonder whether you forgot one of the preamp positions.

You get:

4 × 6L6 STR-445

plus:

5 × 12AX7

for a complete:

9-tube JP-2C replacement set.

Simple.

Correct.

And ready for one of MESA's finest modern amplifiers.

At Northeast Music Center, that's exactly how we'd approach maintaining an amplifier as special as the JP-2C.