Octave · Accessories
Input Modules
Input Modules are the plug-in cards that configure the Octave Phono Module or HP 700 SE preamplifier for different source types, from MM and MC phono to balanced line-level.
fig. 01 · accessories
Input Modules
current
8 photographs · 5 shown
From Octave
IN1 and IN2 cover phono duty directly: IN1 is an MM input switchable between 47k and 1k ohm impedance, and IN2 is an MC input with two gain levels and impedance adjustable from 62 to 1,000 ohms. IN3 does the same MC job over a balanced XLR connection, with impedance adjustable across the same range.
IN6 and IN7 use step-up transformers instead of electronic gain for MC cartridges. IN6 switches its transfer factor between 15 and 30 to suit low-output or moderate-output MC systems, while IN7 has a balanced input with a fixed 1:20 transfer factor, useful when the cable run to the phono input is long or noise rejection matters most.
IN4 covers line-level connections, switchable between XLR and RCA. IN8 and IN9 add transformer-coupled line inputs, XLR and RCA respectively, both with a switchable ground connection, designed as the link between modern DACs or digital sources and the preamplifier.
Specifications
| Input sensitivity | 100 mV - 6 V |
|---|---|
| Input impedanz | 1 kOhm / 47 kOhm / 220 pF |
| Gain factor | 0 dB / transformer 1 : 1 |
| Signal to Noise Ratio | -115 dB |
| Input impedance | 10 kOhm |
| Input impedance RCA / XLR | 50 kOhm / 25 kOhm |
| Gain factor RCA / XLR | 0 dB / +6 dB |
| Distortion factor Cinch / XLR | -125 dB |
| Input sensitivity Gain 15 / 30 | 0.2 - 2 mV / 0.2 - 1 mV |
| Input impedance Gain 15 / 30 | < 320 Ohm / < 80 Ohm | 30 Hz - 40 kHz |
| Pickup internal resistance Gain 15 / 30 | 5 - 25 Ohm / 0.5 - 5 Ohm |
| Pickup internal resistance | 1 - 25 Ohm |
| Frequency range | 30 Hz - 80 kHz / -1 dB |