The Aphex 104 Aural Exciter Type C2 with Big Bottom brought together two of Aphex’s most celebrated audio enhancement technologies in one compact, affordable rack unit. Designed to restore clarity, presence and warmth to dull or lifeless audio, the Aphex 104 combines the patented Aural Exciter process with the Big Bottom low-frequency enhancement circuit.
Together, they deliver increased definition and depth without boosting peak levels or adding noise, making it ideal for recording, mastering, broadcast and live sound applications.
The Aural Exciter section of the Aphex 104 recreates missing harmonics rather than merely boosting high frequencies, restoring natural brightness and detail lost through analogue transfers or low-quality equipment. This approach enhances perceived loudness and stereo image without altering tonal balance or introducing distortion.
The Big Bottom circuit of the Aphex 104, operating dynamically in the 20 Hz to 120 Hz range, increases perceived bass depth and resonance by shaping and extending low frequencies without raising peak output levels. The result is tighter, more articulated low end and a more powerful overall sound.
Front-panel controls allow for precise tuning of both enhancement processes. The Overhang/Drive and Girth/Mix controls shape the Big Bottom response, while the Tune and Mix controls adjust the Aural Exciter’s harmonic content and blend. A selectable Normal/High harmonic switch and an In/Out bypass provide quick tonal comparison.
The Aphex 104 was equally at home in professional studios and live sound systems, enhancing vocals, instruments, and full mixes with clarity and impact. Released in 1993, it remains one of Aphex’s most popular rack units, valued for its musical transparency and ease of use.
Features
- Combines patented Aural Exciter and Big Bottom circuits
- Restores natural brightness, clarity, and presence
- Increases perceived loudness without raising levels
- Improves detail, intelligibility, and stereo image
- Dynamically enhances bass between 20 Hz and 120 Hz
- Produces deeper, tighter low frequencies without overload
- Front-panel controls for Tune, Mix, Drive, and Girth
- Selectable Normal or High harmonic generation
- Bypass switch for instant A/B comparison
- Ideal for recording, mastering, broadcast, and live sound