For all intent and purposes the DBX 224X eliminates tape hiss, but it also increases the overall dynamic range capacity of a tape deck, letting you record both louder and softer sounds than you used to.
Channels: 2
Input sensitivity: 6.5V (max)
Output level: 6.5V (max)
Noise reduction system: dbx II
S/N improvement: 40dB (dbx II)
Dynamic range: 104dB
Frequency response: 30Hz to 20kHz
Total harmonic distortion: 0.5%
Dimensions: 45 x 436 x 222mm
Data sheet