The Hagerman Gamma Radiation is a transistor distortion pedal from Hagerman Amplification. Guitar Pedal X's Stefan Karlsson describes it as a distortion, fuzz-drive, and fuzzstortion, so it reaches beyond straight distortion into fuzz-like textures, sitting somewhere between the two families rather than inside either one1.
What it does
The pedal uses transistor gain stages rather than op-amp clipping, and its control set reflects that: Level, Drive, Tone (a post-EQ control), and Energy, which Guitar Pedal X describes as a medial EQ placed in between the first and second gain stage. That Energy control is the unusual one: it shapes the character of the gain itself rather than the tone after the fact, which is where much of the pedal's texture range comes from1.
"The Hagerman Gamma Radiation is a vibrant, richly textured distortion with plenty of range and gain, dual Tone controls,"
That mention of dual Tone controls refers to the Tone and Energy controls working together as two shaping stages, one before and one after the gain. For a player, that means the pedal can be tuned from a tighter drive voice into looser, fuzzier territory without touching the Drive knob1.
Price and availability
Guitar Pedal X's review, dated 16 March 2026, states a price of $129 with availability from the Hagerman Amplification Webstore1.
The review text mentions that some assembly is necessary, though the reviewer's own unit arrived fully assembled. If you order one, it is worth knowing which version you are getting1.
What reviewers said
Guitar Pedal X's verdict was strongly positive on texture and value: Karlsson called it "a superb distortion pedal every which way," praising its range, gain, and the shaping available from the dual Tone controls at the $129 price1.
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Questions
What kind of pedal is the Hagerman Gamma Radiation?
It is a transistor-based distortion pedal from Hagerman Amplification. Guitar Pedal X describes it as a distortion, fuzz-drive, and fuzzstortion, meaning it reaches from plain distortion into fuzz-like textures. The reviewer called it a vibrant, richly textured distortion with plenty of range and gain, and it is available from the Hagerman Amplification Webstore.
How much does the Hagerman Gamma Radiation cost?
Guitar Pedal X's March 2026 review states a price of $129, with availability from the Hagerman Amplification Webstore. Prices can change over time, so the current listing at the maker's webstore is the figure to go by.
Sources (1)
- Guitar Pedal X, Guitar Pedal X, 2026-03-16
