JAM Pedals TubeDreamer MK 2

The Tubedreamer mk.2 is a warm, rich and articulate 808-style overdrive built to cut through a mix without ever sounding congested or harsh. Its carefully tuned midrange, improved low-gain resolution and touch-sensitive response make every setting feel musical, from subtle edge-of-breakup push to saturated lead tones.

At its core is the legendary JRC4558D chip, paired with three-diode asymmetrical clipping for natural response to picking and fretting nuances. A new no-diode mode delivers a more open, dynamic and amp-like feel with extra headroom, while the dedicated HIGH GAIN footswitch turns the pedal into a flexible two-stage performance tool.

IMPROVED LOW-GAIN CONTROL

The mk.2 offers finer resolution at lower Gain settings, expanding the range of usable clean push and edge-of-breakup tones.

TWO CLIPPING VOICES

• Asymmetrical mode uses three diodes for classic warmth, touch sensitivity and harmonic texture.
• No-diode mode removes diode clipping for a more open, dynamic and amp-like response with greater headroom and clarity.

FOOTSWITCHABLE HIGH GAIN

The dedicated HIGH GAIN footswitch activates an additional gain stage. Two internal trimmers set its output independently for asymmetrical and no-diode modes, allowing matched levels or a deliberate boost.

CONTROLS

Level controls output, Tone adjusts tonal balance, Gain sets drive and the Clipping toggle selects asymmetrical or no-diode operation.

PROGRAMMABLE STARTUP

The effect and HIGH GAIN stage can each power up on or off. Disconnect power, hold the relevant footswitch or footswitches, then reconnect power to save the desired combination.

ARTISTS USING THIS PEDAL

"I'm back on tour now and have also the TubeDreamer with me in my pedalboard." Bill Frisell

SPECIFICATIONS

• Bypass: true bypass
• Core IC: JRC4558D
• Power: 9V DC, centre-negative
• Current draw: 60 mA
• Dimensions including jacks and controls: 7.5 x 12 x 5.6 cm / 2.9 x 4.7 x 2.2 in
• Weight: 280 g / 0.6 lb
• Input impedance: 500 kΩ
• Output impedance: <5 kΩ