The Wren and Cuff Tri Pie '70 is a fuzz pedal: the maker's own version of the famous triangle knob Big Muff circuit from around 19701. Like the original it uses silicon transistors, which Wren and Cuff notes all the muffs of that era had, though silicon was still new at the time and far less consistent than it is today1. The maker chose its transistor combination by blind-testing, and keeps the exact parts private, saying only that it is a combo of common and slightly uncommon transistors with the characteristics they wanted1.
The pedal is made in the USA, carries a lifetime warranty, and is built into a compact enclosure1.
How it differs from a modern Big Muff
Wren and Cuff positions the Tri Pie '70 against the modern-day Big Muff rather than against other clones. In the maker's words21:
Wren and Cuff positions the Tri Pie '70 as its take on the triangle-knob Big Muff circuit from around 1970, rather than a copy of the current production model1. The B-stock units the maker has offered show where the differences can be pushed further: the Creamy mod adds a huge output boost with less fuzz but more punch, and the Mid-flat mod flattens the deep midrange notch characteristic of muff-style pedals for a different palette of tones2.
What that means for a player: less saturation means the fuzz is not as thick and compressed as a current Big Muff, a bit less mid-scoop leaves more of the guitar's midrange in the sound, and more snarl pushes it toward a rougher, more aggressive character. The maker also says the pedal's range is more useful than a modern Big Muff's, that it responds well to the guitar's volume knob, and that it even gets into the overdrive zone at lower settings1. That last point matters on a pedalboard: instead of one saturated fuzz sound, rolling the volume back moves the Tri Pie '70 into overdrive territory.
Power and bypass
The Tri Pie '70 runs on a 9V battery or a 2.1mm adapter, with the maker specifying a 9VDC negative tip adapter1. Current draw is 5mA1, low enough that a battery is a realistic long-term option and the pedal is easy on a shared power supply. It uses true hard-wire bypass1, so the bypassed signal does not pass through the effect circuit.
B-stock units and the Creamy and Mid-Flat mods
Wren and Cuff has sold the Tri Pie '70 through its B-stock listings at a discount, and one of those B-stock units came with two circuit mods that change the pedal's character2.
The Tri Pie '70 and its B-stock listings are all marked sold out on the maker's site as of late October 2026132. B-stock units were discounted, cosmetically imperfect units: one was a demo board unit with minor hairline scratches, imperfections in artwork, and/or blemished knobs3, and another was a BLEM with minor hairline scratches and possibly blemished knobs2.
The two mods, as the maker describes them:
| Mod | What it does |
|---|---|
| Creamy | "Creates a huge output boost, with less fuzz but more punch!"2 |
| Mid-flat | "This mod simply takes the characteristic deep mid range notch in any muff-style pedal, and flattens it out" for a whole other palette of tones2 |
The Mid-flat mod is the more far-reaching of the two for a player deciding between versions. The deep midrange notch is part of the Big Muff sound, and flattening it restores the frequencies a stock circuit scoops out, which helps a guitar cut through a band mix. The Creamy mod instead trades fuzz for level and punch, closer to a boost with some hair on it2.
B-stock pricing as listed in October 2026:
| Unit | Sale price | Original price |
|---|---|---|
| Standard Tri Pie '70 (new) | $199.99 list1 | not given |
| B-stock demo board unit | $159.993 | not given |
| B-stock BLEM with Creamy and Mid-flat mods | $167.992 | $209.972 |
The B-stock demo board unit was described as a standard Tri Pie '70 with minor hairline scratches, imperfections in artwork, and/or blemished knobs, and shipped next day3.
Videos
ProGuitarShopDemos
Sinasoid
Delicious Tones
Questions
How does the Tri Pie '70 differ from a modern Big Muff?
Wren and Cuff says that, compared to the modern-day Big Muff, the Tri Pie '70 has less saturation, a bit less mid-scoop, and more snarl, while keeping a smoothness that sweetens the sound in a musical way. Its range is more useful, it responds well to the guitar's volume knob, and it reaches overdrive territory at lower settings.
Does the Wren and Cuff Tri Pie '70 clean up with the guitar volume knob?
Yes. Wren and Cuff says the pedal responds well to your guitar's volume knob and even gets into the overdrive zone at lower settings, so rolling back the volume backs the fuzz down toward overdrive rather than staying at full saturation.
Is the Tri Pie '70 true bypass?
Yes. Wren and Cuff lists the pedal as true hard-wire bypass, so with the effect switched off the signal passes through without the circuit coloring it.
Can the Tri Pie '70 run on a battery?
Yes. The pedal runs on a 9V battery or a 2.1mm adapter, described by the maker as a 9VDC negative tip adapter. Current draw is 5mA, so a battery lasts a long time.
Is the Wren and Cuff Tri Pie '70 still available?
As of late October 2026 the maker's product page lists the Tri Pie '70 as sold out, and the B-stock listings are also sold out. It carried a list price of $199.99, with B-stock units appearing at lower sale prices.
Sources (3)
- Tri Pie '70, Wren and Cuff
- Cust Shop Tri Pie '70 + Creamy + Mid-Flat *B-Stock BLEM*, Wren and Cuff
- Tri Pie '70 B-Stock Summer Sale, Wren and Cuff
