SD-9 Sonic Distortion

The original 1980’s PT-9 Phaser was a great pedal, but a little known fact is that Maxon also offered a different version of that model that was only sold in Japan under the Maxon brand – dubbed the PT-9 Pro, this silver-boxed rarity featured optical circuitry for a lush, drippy, 3D phasing effect similar to vintage units such as the Mu-Tron Phaser II and the Shin-Ei Uni-Vibe.

The PT-9 Pro+ Phaser takes this ultra-rare version of the PT-9 and adds a voltage-doubling IC to offer massive headroom and an improved frequency response, yielding fat, full-bodied phasing with incredible clarity and transparency.

Review by mylespaul

Product Page

Review by The Gear Page

Demo by TooNyTooN

Demo by GodlykeInc

PT9 Pro+ Phase Shifter

The Maxon ST-9 Pro+ Super Tube Pedal stakes a big claim for being one of the most sonically customisable overdrive pedals ever invented. The secret behind this incredible functionality and tone lies in the design which was loosely based on the late 70s OD-808, just with some major upgrades.

The Mid Enhance control lets you vary the amount of iconic mid-boost that Maxon overdrives provide, while the Low Boost switch allows a rumbling low-end response with increased saturation thanks to an alternate set of clipping diodes. Add to this, the pedal can operate at either 9V or 18; run at 9V for the classic 808 sound or switch to 18V for increased headroom, improved dynamics, and thicker, chunkier overdriven textures.

Review by Premier Guitar

Official Website

Demo by Riffs, Beards & Gear

Review by guitartest.de

ST-9 Pro+ Super Tube

In 1994, one Bill Finnegan (and two engineers from MIT) sat down and created the Klon Centaur, one of the most talked-about circuits of all time. While it was at its core an overdrive circuit, it boasted several innovations that put it ahead of the rest of the stuff out there. For one, it included a robust power supply that provided a theoretical 27 volts of headroom from a nine-volt supply. Perhaps more notably, the Centaur thrust the idea of dual-gang potentiometers into the groupthink of pedal development. While these weren’t cutting-edge tech in 1994, very few pedals utilized them. In fact, the Shin-Ei Uni-Vibe is one of the only popular pedals I can remember using one (C100K in fact).

Review by musicradar 

Review by Catalinbread 

Demo by Guitar Bonedo 

Demo by Reverb 

Demo by intheblues

Review by Top Guitars 

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OD820 Overdrive Pro

The AD999’s Delay tone is pure analog heaven – rich, round and three-dimensional, it reacts to your playing and breathes life into your performance.

Demo by Godlykelnc

AD-999

AD-999 by Maxon

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