Electro-Harmonix gear on the Anagram

Electro-Harmonix was founded in New York in 1968 by Mike Matthews. It is known for affordable, sometimes wild pedals, and above all for the Big Muff Pi fuzz. Over the years the Big Muff has come in many versions, including the green, Russian-built one of the 1990s that bass players still chase.

Dust & Coil says the Deep Freeze was the reference for Hold It Infinite Sustain. The Deep Freeze grabs a note and holds it, and Dust & Coil added its own bass-focused processing on top. That is confirmed by the developer.

The two built-in blocks are inferred. Green PiRate Fuzz is likely the Green Russian Big Muff, going by the name. Gravitron is our guess at a Q-Tron-style envelope filter. The Q-Tron was itself designed by Mike Beigel, who created the Mu-Tron III.

The Green Russian Big Muff is a thick, smooth fuzz with a deep low end, which is why it works on bass where many fuzzes thin out. Its tone control sits in a mid scoop by default, so the sound is huge alone but can vanish in a band. A little mid boost after it brings it back.

The Deep Freeze idea is different. It lets you hold a chord or note as a pad and play over it, handy for loop-style playing or for filling space in a small band.

Try Green PiRate Fuzz first, since it is built in. Run it with some clean signal blended in, so your low end stays firm under the fuzz.