The RNDI-8 consists of eight independent channels of RNDI Active Transformer Direct Interface in a single rack space, providing direct instrument injection for electric guitar and bass, synthesizer, keyboard, piezo pickup, or any other instrument-level source .

Input impedance: Instrument input 2.2 MΩ, 10dB PAD activated 200 kΩ
Output Impedance: Less than 40 Ohms
Maximum input level @ 1kHz Instrument input +21 dBu -10dB PAD activated +31 dBu
Maximum output level @ 1kHz: +11 dBu
Frequency Response (9 m output cable, 10k equivalent load) +/- 0.25 dB: 28 Hz - 50 kHz, +/- 1 dB: 14 Hz - 90 kHz, -3 dB: 5 Hz
Noise (measured output, unweighted BW 22Hz - 22kHz, 150 ohm source impedance): -110 dBV
Total harmonic distortion + noise (THD+N%) at 1 kHz: +20 dBu Input level: 0.35% typical (2nd and 3rd harmonics)
Phantom power, 4.5 mA per channel at +48 V DC
19" rack mount option: 1RU reversible bolt-on rack lugs
Dimensions (L x W x H): 483mm x 206.3 x 45mm
Weight: 4.1kg