Octave · Phono Stages
Phono EQ.2
The Phono EQ.2 is a semiconductor-based external phono preamplifier for MM and MC cartridges, with adjustable impedance and gain.
fig. 01 · phono stages
Phono EQ.2
current
6 photographs · 5 shown
From Octave
The EQ.2 handles both Moving Magnet and Moving Coil cartridges from a single compact chassis, with input impedance selectable across a range from 62 to 1,000 ohms and gain adjustable in four steps for MC: 58dB, 62dB, 68dB, and 72dB, plus a fixed 50dB for MM. That range of adjustment lets you tune the preamp's loading to a specific cartridge rather than accepting one fixed setting.
An external power supply keeps the 50 or 60Hz line frequency away from the very low input voltages coming off the cartridge, and a subsonic filter protects bass drivers from subsonic rumble. All connectors are gold plated.
The Phono EQ.2 works as a standalone alternative for amplifiers and preamplifiers that lack a dedicated phono stage, or whose built-in phono input falls short of a dedicated outboard design.
Specifications
| Basic model | Phono EQ.2 |
|---|---|
| Design | Black |
| Dimensions Preamplifier / Power Supply | 100 x 55 x 167 mm / 50 x 55 x 40 mm (W x H x D) |
| Weight Preamplifier / Power Supply | 0.8 kg / 0.1 kg |
| Input sensitivity MM / MC | 4 mV / 100 µV - 1 mV |
| Input impedance MM / MC | 47 kOhm +220 pF / 62 Ohm - 1 kOhm |
| Gain MM | 50 dB |
| Gain MC | 58 dB, 62 dB, 68 dB, 72 dB (adjustable) |
| Signal-to-noise ratio MM / MC | -90 dB / -74 dB ... -86 dB at 2.5 V Output level |
| Maximum input level MM / MC | 19 mV / 2.3 mV |