The JAM Pedals Tubedreamer mk.2 is a premium, point-to-point evolution of the definitive 808-style overdrive circuit. Handcrafted in Athens, Greece, JAM Pedals engineered the mk.2 to deliver a warm, rich, and naturally articulate overdrive that completely bypasses the harsh, congested midrange honk associated with generic tube-screamer clones. By pairing foundational vintage architecture with modern, performance-driven switching, the mk.2 redefines what a boutique overdrive pedal can achieve on a professional signal chain.

At the center of the Tubedreamer’s signal path is the legendary, new-old-stock JRC4558D operational amplifier chip—the same component driving the most coveted vintage units from the late 1970s and early '80s. JAM Pedals combines this historic chip with improved low-gain resolution, providing finer micro-control over your core grit and unlocking a much wider array of touch-sensitive clean-boost and light breakup textures at the bottom end of the gain sweep.

Asymmetrical Clipping vs. No-Diode Dynamic Modes

The mk.2 introduces an exceptionally interactive two-way clipping toggle that drastically alters the pedal's compression and clipping behavior:

• Asymmetrical Clipping: Uses a specialized 3-diode layout that introduces an uneven clipping threshold. This replicates the complex, touch-sensitive breakup of an overdriven tube amplifier power section, responding dynamically to your picking velocity and guitar volume adjustments.
• No-Diode Mode (N): Completely removes the clipping diodes from the circuit. This shifts the pedal into a wide-open, highly linear operational amplifier boost, providing maximum clean headroom, crisp transient delivery, and an uncompressed, amp-like response.

Dual-Channel Utility with Dual Internal Trimmers

For the first time in the Tubedreamer’s history, the high-gain boost stage is fully accessible via an independent, secondary footswitch, turning the pedal into a true two-channel dirt box. To ensure complete control over your stage levels, JAM Pedals integrated dual internal trimmers. These allow you to set an independent output volume specifically for the high-gain mode across both clipping options—allowing you to dial in either a perfectly unity-volume gain jump or a massive, soaring solo boost.

Boutique Direct Utility

• Selectable Power-On State: A smart utility feature allows you to program the pedal’s internal memory to either immediately engage or remain completely bypassed upon receiving power on your board.
• Boutique Enclosure: Housed in JAM Pedals’ signature, hand-painted enclosure, giving every single pedal a unique aesthetic finish while utilizing premium, tour-grade components.
• True Bypass Signal Integrity: Equipped with a mechanical true bypass switch to ensure your clean instrument signal passes through completely uncolored when the effect is disengaged.

Tech Specs

• Pedal Type: Professional 808-Style Overdrive / Dual-Channel Boost
• Core Component: Legendary JRC4558D Op-Amp Chip
• Controls: Level, Tone, Gain, 2-Way Clipping Toggle (Asymmetrical / No-Diode)
• Footswitches: Bypass, High-Gain Stage Engage
• Input Impedance: 500 kΩ
• Output Impedance: Less than 5 kΩ
• Power Requirement: 9V DC (Center Negative, ~60mA current draw)
• Dimensions: 2.9" x 4.7" x 2.2" (7.5cm x 12.0cm x 5.6cm)
• Origin: Handbuilt and Hand-Painted in Athens, Greece