OD808 Overdrive

The TOD-9 takes Maxon’s classic OD-9 circuit and adds a tube gain stage at the front end to create an ultra-compact, tube-driven tone machine.
The TOD features a mil-spec 5703WB JAN Raytheon sub-miniature vacuum tube complete with its own separate Gain control (Tube knob).  This tube stage is positioned at the front of the audio path, driving the OD-9 circuit.

Review by RIG TALK

Review by sevenstring.org

TOD-9 True Tube Overdrive

Review by Squid Guitar

Review by bonedo

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AD9Pro Analog Delay

With independent Overdrive, Distortion, Boost and Noise Gate circuits all under one hood, the RTD800 may be the last “dirt” pedal that you’ll ever need.

By combining various solid-state clipping stages with a real dual-triode tube, the RTD800 offers a massive array of saturated guitar tones.  From traditional tube overdrive through full-on gated metal distortion, no other drive pedal offers this degree of versatility in a single package.

Review by Premier Guitar

RTD800 Real Tube Overdrive/Distortion

With a circuit based around the Panasonic MN3207 Bucket Brigade IC, the CS550's “straight-outta ’79” chorus effect is bold and resonant without sounding harsh.  Unlike the sterile chorus sounds of the 80’s, the 550 has an edgy, almost grainy quality that keeps your tone articulate and prevents wash-out.

The CS550’s custom-tuned oscillator circuit provides enough speed for authentic rotary speaker simulation, and just the right amount of modulation for a lush vibrato that won't leave you feeling queasy.

Review by Harmony Central

Review by musicradar