Jam Pedals releases Tubedreamer MK2 overdrive with no-diode mode

January 1, 2025 · 4 sources

Jam Pedals has released the Tubedreamer mk.2, an update to its 808-style overdrive that adds a no-diode clipping mode and a dedicated HIGH GAIN footswitch¹. The maker describes the pedal as "a warm, rich and articulate 808-style overdrive built to cut through a mix without ever sounding congested or harsh"¹.

The circuit keeps the JRC4558D chip and three-diode asymmetrical clipping¹. A Clipping toggle selects between asymmetrical mode, which the maker says uses three diodes for "classic warmth, touch sensitivity and harmonic texture," and no-diode mode, which removes diode clipping for "a more open, dynamic and amp-like response with greater headroom and clarity"¹. The HIGH GAIN footswitch "activates an additional gain stage," and two internal trimmers set its output independently for each clipping mode, allowing matched levels or a deliberate boost¹. The mk.2 also offers "finer resolution at lower Gain settings"¹. Level, Tone and Gain are the remaining controls¹. The effect and the HIGH GAIN stage can each be set to power up on or off by holding the relevant footswitch while reconnecting power¹.

Specifications as listed by Jam Pedals¹.

Gearnews reports a US price of $243.00 and says the pedal is available now². Guitar Pedal X reports that the High Gain option moved from a toggle switch on the original to a second footswitch on the mk.2³, and Gearnews dates the original to 2010². Delicious Audio, reviewing the pedal, called the no-diode mode "pure op-amp gain" and said the gain control offers "more resolution at low settings"⁴.