Vintage Digital
My Effects Rack

dbx 150 Series

The dbx 150 Series, introduced in 1974, represented dbx’s first complete range of professional broadband noise reduction systems, bringing the company’s advanced Type I companding technology to studios of all sizes. Consisting of models such as the two-channel 152, the four-channel 154, and the rack-mountable 157, the series delivered up to 30dB of noise reduction and 10dB of additional headroom, effectively eliminating tape hiss while preserving full dynamic range and transient detail. Using dbx’s true RMS detection circuitry, the 150 Series maintained precise tracking and sonic transparency across the entire frequency spectrum. Compact, reliable, and compatible with one another, these units became a cornerstone of mid-1970s recording technology, making professional-quality noise reduction accessible to both small and large studios.

1974
Noise Reduction
/ Made In U.S.A.

dbx 152 2-Channel Noise Reduction System

The dbx 152 was a two-channel professional noise reduction system introduced in 1974, providing 30dB of hiss reduction and 10dB of added headroom. Compact and easy to use, it delivered dbx’s signature linear companding and RMS tracking in an affordable format ideal for smaller studios and recordists seeking professional-quality results.
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dbx 152
1974
dbx 154
Noise Reduction
Made In U.S.A. /

dbx 154 2-Channel Noise Reduction System

The dbx 154 was a four-channel noise reduction system introduced in 1974, delivering 30dB of broadband noise reduction and 10dB of added headroom. Compact yet professional, it used dbx’s proven Type I companding technology to provide transparent operation, accurate tracking, and full compatibility with all dbx 150 Series systems.
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1974
Noise Reduction
/ Made In U.S.A.

dbx 157 2-Channel Decilinear Noise Reduction System

The dbx 157 was a two-channel professional noise reduction system. Offering simultaneous encode and decode capability, it provided 30dB of broadband hiss reduction and 10dB of added headroom through dbx Type I companding. Fully compatible with other dbx 150 Series units, it delivered transparent, noise-free analogue recording in a compact stereo format.
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dbx 157
1976
dbx 155
Noise Reduction
Made In U.S.A. /

dbx 155 4-Channel Tape Noise Reduction System

The dbx 155 provided four channels of professional broadband noise reduction with 30dB of hiss reduction and 10dB of added headroom. Its true RMS companding system ensured precise tracking, transparency, and dynamic accuracy, making it a reliable and flexible choice for small studios and professional facilities seeking high-quality analogue recording with minimal noise.
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