Altair is best known in the music world for the PW-5 Power Attenuator, widely cited as the first commercially available power soak for guitar amplifiers when it appeared in the late 1970s. The PW-5 connects between a tube amp's speaker output and the cabinet, using a stepped rotary switch (typically 4 dB increments up to around 44 dB of attenuation) and a line-out with a pad switch, allowing players to push power tubes into saturation at lower listening volumes. Its rugged metal-cased design influenced later attenuators, and devices like the THD Hot Plate and Marshall Power Brake are often described as descendants of the PW-5.

Altair also produced studio outboard gear, most notably a tube limiter that found a place in classic rock recording history. Jimmy Page has cited an Altair tube limiter as a key tool he used to track acoustic guitars beginning with Led Zeppelin III. The PW-5 attenuator continues to circulate on the vintage market through shops like Reverb and remains a reference point in discussions of early amp attenuation.

Altair Audio has 1 product cataloged on Equipboard, including Converters.