MXR '76 Vintage Dyna Comp

The MXR '76 Vintage Dyna Comp is a limited-run reissue of the 1976 MXR Dyna Comp, the script logo compressor that MXR's own press release called "the ultimate stomp box compressor" of its era¹. It was built by the MXR Custom Shop, and its whole reason for existing is a chip: the original CA3080 "metal can" integrated circuit, out of production since the 1980s, of which MXR tracked down enough to produce a limited run of pedals¹².

As a compressor pedal, it does what the Dyna Comp has always done: it tightens up a guitar signal by making the quiet notes louder and the louder notes quieter, evening out your playing and adding sustain³. MXR says the CA3080 IC yields quieter operation, greater transparency and increased dynamic range compared with later reproductions that use substitute parts¹.

The Custom Shop version

The '76 Vintage Dyna Comp is a Custom Shop product. Dunlop, MXR's parent, focused on recreating an exacting replica of the 1976 script logo Dyna Comp, and Premier Guitar's review describes the result as featuring "the exact same circuitry as the 1976 version, right down to the component layout, silkscreening and handmade wire harness"³. The original press release put it the same way: identical circuitry, identical component layout, identical silkscreening¹.

That fidelity extends to what the pedal leaves out. The 1976 Dyna Comp had no status LED, no AC adapter input and no true bypass switching, so the reissue has none of them either³. MusicRadar's review confirms the same components, battery-power only and no LED⁴. For a player used to modern pedals, that means three practical things:

• There is no AC adapter input, so no wall power connection is provided.
• You cannot see at a glance whether it is on.
• When it is bypassed, its buffer stays in the signal path, as on the original.

The run is limited because the parts are. The CA3080 ICs have been out of production since the 1980s, and MXR tracked down a stash of them, enough for a limited run of what the press release called "these little red boxes of compression bliss"¹². Premier Guitar reported that MXR had procured a batch of the chips and that how many pedals would be produced had not been announced, adding that with limited quantities of the CA3080 it would be a good idea to pick one up while you can³. The original announcement predicted the pedal would "quickly become as ultra collectible" as the original¹.

Controls and how it sounds

The pedal keeps the original's two-knob format. What each knob does follows from how a compressor works³:

Premier Guitar's review explains the Sensitivity knob in country terms: country guitarists get that clicky, percussive sound by cranking up the sensitivity so the effect engages fast and grabs the note³. Turning the Output up raised overall volume and also uncovered a bit more of the inherent grit the reviewer's amp had hidden³.

On sound, the reviews are positive. Premier Guitar's reviewer found fantastic sustain from a stock clean sound, with a Fender Strat through a Legend Rock 'N' Roll 50 combo producing chords that "rang out for days" with rich texture and sustain³. MusicRadar's Trevor Curwen found that it thickens tone and gets squishy if you need it to, with a note attack that can have a pronounced snap but still sound natural⁴. His verdict was short: "Faithful to the excellent original model. Sounds natural."⁴

The CA3080 chip

The key component is the old school CA3080 "metal can" integrated circuit, the part at the heart of the 1976 compressor circuit¹. MXR credits it with quieter operation, greater transparency and increased dynamic range¹, and Premier Guitar's review repeats those claims for the reissue's original-spec chips³. Because the chip has been out of production since the 1980s, the reissue could only be made in limited numbers, which is what makes this version distinct from the standard Dyna Comp line².

Where it sits in the Dyna Comp family

The original Dyna Comp was made in Rochester, New York, and TONEHOME's product page for the MX-102 model documents later versions, including a non-LED version from 1980². The '76 Vintage reissue sits apart from MXR's other Dyna Comp variants, which modernized the formula: the MXR Script Dyna Comp, the MXR Super Comp, the MXR Dyna Comp Mini and the MXR Dyna Comp Deluxe, the last of which adds an attack switch, tone knob and clean blend. None of those uses the original CA3080 chip, and none reproduces the 1976 pedal's battery-only, no-LED format.

Price

The announced US street price was $175¹, and Premier Guitar's 2026 review of the Custom Shop version lists the same street price³. In Germany, gitarre & bass magazine's November 2009 review listed the price as around 239 euros⁵.

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