Spaceman Effects releases Atlas IV Preamp Booster as successor to Atlas III

August 16, 2025 · 3 sources

Spaceman Effects has released the Atlas IV: Preamp Booster, the next generation of its Atlas III, which the maker says has been out of production for several years¹. Pedal of the Day covered the pedal on August 16, 2025².

The Atlas IV is a discrete FET transistor preamp circuit with up to 15dB of boost, built with through-hole components and wired by hand in Portland, Oregon¹. It has one large boost knob and two toggle switches. Thrust increases harmonic saturation, slightly lowers headroom and raises maximum output by 5dB; Axis shifts the voicing up, reducing bass and increasing treble¹. Spaceman describes the pedal as "a booster, a pre-amp and a tone enhancer"¹.

Switching is true bypass via a soft-click footswitch, and the maker says the toggle switches are quiet for use with cranked amps¹. The pedal runs on a 9V battery or a 9V DC negative-center supply through a 2.1mm jack, and has an EXP/control voltage TRS jack for 0-5V DC¹. Spaceman lists three signed and numbered First Editions (Gray, Black and White), with the Gray Edition described as ultra-limited with a vintage dimmable aerospace indicator; a limited White Light Edition is sold only through stores¹.

Source: Spaceman Effects¹. The maker's page also lists a second weight of 14.8 ounces in a repeated specifications block¹.

The US list price is $249.00 to $279.00¹. At the time of its article, Pedal of the Day reported that all versions were sold out on the Spaceman Effects website². Guitar Pedal X, writing on June 26, 2025, said the Gray version had sold out quickly and that the Black and White Editions were then pre-orders³.