The FuzzHugger Upper is an analog octave-up pedal from FuzzHugger, a frequency doubler built on a modified Green Ringer circuit, which the maker describes as a vintage analog octave-up effect1. FuzzHugger describes its sound as "cleanish but gritty, and clangy, with ring-mod-like artifacts"1. It sits in the wider family of octave and pitch pedals, but where many octave pedals track your notes and shift them, a frequency doubler generates its octave-up signal from the waveform itself.
Availability and the small-batch builds
The Upper returned in 2026 after a long absence. FuzzHugger announced it as "available for the first time in 5+ years," as a small batch of custom builds with no plan to return to standard production1. The builds carry a custom one-of-a-kind encased burlap finish by T. Dalton23.
Two sale-priced versions of the Deluxe Clear Finish build were listed, one at $129.00 USD, marked down because of a small imperfection in the clear coat1, and another at $115.00 USD2. The maker's pages give both sale prices without settling which applies to which listing.
The Upper is a small-batch release with no plan to return to standard production, so availability is limited by design.
Controls and how it works
The Upper keeps the Green Ringer approach simple: one knob and no volume control1.
| Control | What it does |
|---|---|
| Frequency | A knob for reducing highs, as frequency-doubling can be bright and ear-fatiguing1 |
Like the original, there is no volume knob; the output volume matches the input volume1. That means the pedal neither boosts nor cuts your level, and any level shaping has to come from elsewhere on the board.
Power and warranty
The Upper runs on 9V DC power only and takes no battery1. FuzzHugger backs the pedal with a lifetime transferrable warranty1.
The Green Ringer name
FuzzHugger notes that it does not own the name "Green Ringer," which may be a trademark of Dan Armstrong Effects, an unaffiliated company4. The Upper is FuzzHugger's modified take on that circuit rather than a copy sold under the original name.
Videos
FuzzHugger Effects
FuzzHugger Effects
MagicLawnChair
Questions
Is the FuzzHugger Upper analog?
Yes. FuzzHugger describes the Upper as a modified Green Ringer, a vintage analog octave-up effect. It works by frequency doubling, producing an octave-up signal from the notes you play, with a cleanish but gritty, clangy character and ring-mod-like artifacts rather than a polyphonic pitch-shifted sound.
Does the FuzzHugger Upper have a volume knob?
No. Like the original Green Ringer design it is based on, the Upper has no volume knob. FuzzHugger states that the output volume matches the input volume, so what comes out is at the same level as what goes in. Its only control is the Frequency knob for reducing highs.
Does the FuzzHugger Upper take a battery?
No. The Upper runs on 9V DC power only and has no battery compartment, so you will need a 9V DC pedal power supply to use it.
What circuit is the FuzzHugger Upper based on?
The Upper is a modified Green Ringer, which FuzzHugger describes as a vintage analog octave-up effect. The maker notes that it does not own the name Green Ringer, which may be a trademark of Dan Armstrong Effects, an unaffiliated company.
Does the FuzzHugger Upper have a warranty?
Yes. FuzzHugger lists a lifetime transferrable warranty for the Upper, so coverage stays with the pedal if it is sold to another owner.
Sources (4)
- FuzzHugger Upper frequency doubler / octave up, FuzzHugger Effects
- FuzzHugger Upper frequency doubler / octave up, FuzzHugger Effects
- FuzzHugger Upper frequency doubler / octave up, FuzzHugger Effects
- FuzzHugger Upper frequency doubler / octave up, FuzzHugger Effects