Input Modules
The Octave Phono Module and the Octave HP 700 (SE) preamplifier offer the option of installing or retrofitting various input modules.
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The Octave Phono Module and the Octave HP 700 (SE) preamplifier offer the option of installing or retrofitting various input modules.
The range of input modules ranges from electronic high level and MC inputs, symmetrical and unbalanced, to input modules for high level and phono MC in transformer technology. Transformer-coupled inputs (step up transformers) are the optimal solution for the highest quality natural reproduction.
This modular flexibility means that every high-end system can be adjusted to the individual needs and preferences of the listener.
Phono Input Module IN 1: RCA MM Input Module
IN 1 is an analog phono input for MM pickup cartridge systems. Two input resistances can be set on the module, 47 kohm for MM systems and 1 kohm for MC high-output systems.
| Input sensitivity | 3 - 5 mV |
| Input impedanz | 1 kOhm / 47 kOhm / 220 pF |
| Gain factor | 38 dB |
| Signal to Noise Ratio | 77 dB Broadband / 94 dB Band-pass at 1 kHz |
Phono Input modul IN 2: Cinch MC Input modul
IN 2 is an analog phono input for MC pickup cartridge systems. This MC input can be switched into two amplifier levels. The input resistance can vary within the range of 62–1000 ohms.
| Input sensitivity | 0.1 - 1 mV |
| Input impedance | 62 - 1000 Ohm || 4.7 nF |
| Gain factor | 65 dB Gain high, 58 dB Gain low |
| Signal to Noise Ratio | 69 dB Gain high; -75 dB Gain low ; Broadband |
Phono input module IN 3: XLR MC input module
IN 3 is a balanced phono input for MC pickup systems.
This MC input can be switched in two levels of gain.
The input impedance can be varied in the range 60 – 1000 ohms.
| Input sensitivity | 0.1 - 1 mV |
| Input impedance | 62 Ohm - 1 kOhm / 4.7 nF |
| Gain factor | 65 dB Gain high, 58 dB Gain low |
| Signal to Noise Ratio | 72 dB Gain high, -78 dB Gain low |
High level input module IN 4: XLR / RCA input module switchable
IN 4 is a LINE IN module that can be used either as an additional XLR or as an additional RCA input.
The switch from XLR to Cinch is done via a pressure switch on the back.
| Input sensitivity | 100 mV - 7 V |
| Input impedance RCA / XLR | 50 kOhm / 25 kOhm |
| Gain factor RCA / XLR | 0 dB / +6 dB |
| Signal to Noise Ratio | -120 dB fixed output |
| Distortion factor Cinch / XLR | -125 dB |
Phono input module IN 6: RCA MC transformer input module
IN 6 is a step up transformer for low-resistance MC systems.
The transmission factor can be switched between 15 and 30.
The Gain 30 position is ideal for classic low output MC systems with a level of around 300 µV, the Gain 15 position is optimally tuned for all modern MC systems that deliver a level between 0.5 and 1 mV.
| 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 |
| Gain factor | 15 / 30 |
| Pickup internal resistance Gain 15 / 30 | 5 - 25 Ohm / 0.5 - 5 Ohm |
Phono input module IN 7: XLR MC transformer input module
IN 7 is a step up transformer with symmetrical inputs with a transfer factor of 1:20.
A symmetrical coupling of the pickup brings advantages in terms of the signal-to-noise ratio if the signal cable to the phono input is relatively long and if the highest demands are placed on tonal purity.
| Input sensitivity | 0.2 - 2 mV |
| Input impedance | < 200 Ohm | 30 Hz - 40 kHz |
| Gain factor | 20 |
| Pickup internal resistance | 1 - 25 Ohm |
High level input module IN 8: XLR line transformer input module
IN 8 is a line input module for XLR, with a balanced input transformer.
The ground connection of the XLR input and the preamplifier can be separated using a switch on the module board.
Due to the transformer coupling, this module is the ideal link between modern DACs, music servers, CD players, etc.
| Input sensitivity | 100 mV - 6 V |
| Input impedance | 10 kOhm |
| Gain factor | 0 dB / transformer 1 : 1 |
| Signal to Noise Ratio | -115 dB |
| Frequency range | 30 Hz - 80 kHz / -1 dB |
High level input module IN 9: RCA line transformer input module
IN 9 is a line input module for RCA, with an unbalanced input transformer.
The ground connection of the RCA input and the preamplifier can be separated using a switch on the module board.
Due to the transformer coupling, this module is the ideal link between modern DACs, music servers, CD players, etc.
| Input sensitivity | 100 mV - 6 V |
| Input impedance | 10 kOhm |
| Gain factor | 0 dB / transformer 1 : 1 |
| Signal to Noise Ratio | -115 dB |
| Frequency range | 30 Hz - 80 kHz / -1 dB |