Audio Footsteps

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Audio control center with 8 unbalanced inputs and processor loops including Phono, main outputs of Route 3, and balanced input / output jacks.

All signal switches use a read relay system with digital logic control.
Sealed in glass tubes, these relays are highly reliable for long periods of time because they have little distortion and are insulated from the atmosphere.

The 5-band equalizer can be freely boosted or cut by up to ± 12 dB at 30 Hz, 150 Hz, 500 Hz, 1.5 kHz and 10 kHz.
At the center click position, the entire equalizer circuit is bypassed so that accurate flat characteristics can be obtained.
The compander system has expansion and compression modes, and you can optionally compensate for the dynamic range of the source.
It also has an active loudness control that can be adjusted independently of the master volume.

The equalizer for analog disks is powerful enough to match the output performance of a mini power amplifier of 100 mW or higher, and the low-impedance RIAA element uses a precision resistor of 1% equalization deviation, distortion and noise.

Built-in monitor power amplifier with power guard.
In addition to being able to monitor switching between the listening system and REC system, it is also equipped with an external input terminal so that it can be used for surround amplifier, etc.
Power Guard is a Macintosh unique protection circuit that constantly compares the input and output waveforms and automatically lowers the input level when a difference (distortion) is detected.

With the SCR-3 relay unit (sold separately), you can switch between two speakers and control the power supply of the power amplifier using the front panel switch.

A 7-position full mode selector for mono and bilingual sources.

Equipped with a processor switch on the front panel that enables ON/OFF signals for external equalizers, surround processors, etc.

Front panel is glass with gold / teal blue lighting.

Model Rating
Type Audio Control Center
Preamplifier Section
Frequency characteristic 20 Hz to 20000 Hz, + 0 -0.5 dB
Rated output 2.5 V (main, switches 1 and 2, balanced output)
Output impedance 600 Ω (main, switches 1 and 2, balanced output)
Maximum output voltage 8 v (main, switches 1 and 2, balanced output, 20 Hz to 20000 Hz)
Total harmonic distortion factor Maximum 0.002% (20 Hz to 20000 Hz at rated output)
Input sensitivity Phono : 2.5 mv (at 2.5 v rated output) (0.5 mv IHF)
High level : 250 mv (at 2.5 v rated output) (50 mv IHF)
Signal-to-noise ratio (A-network) Phono : 90 dB for input up to 10 mV (84 dB IHF)
High level : 105 dB below rated output (95 dB IHF)
Maximum input signal Phono:90mV
High level : 10 v
Input impedance Phono : 47k Ω, 65 pF
High level : 22k Ω
Voltage gain (gain) Phono → Tape : 40 dB
High level → Tape : 0 dB
Phono → Main : 60 dB
High level → Main : 20 dB
Equalizer control Variable, 30 Hz, 150 Hz, 500 Hz, 1500 Hz, 10000 Hz Center
Up to 12 dB Booth or Cut
Monitor Amplifier Section
Output 20W+20W
(Minimum sine wave continuous average output per channel for 8 ohm load.
Output RMS : 12.6 V for 8 Ω load in summer, rated output band 20 Hz to 20000 Hz)
Total harmonic distortion factor Up to 0.005% at any power from 250 mW to rated output
Frequency characteristic 20 Hz to 20000 Hz, + 0 -0.5 dB
Input Sensitivity / Impedance 750mV/27k Ω (at Rated Output)
Signal-to-noise ratio (A-network) 100 dB (below rated output) (87 dB IHF)
AC power outlet Power link : 4 units
Power supply not linked : 1 unit
Pwer 100 VAC, 50Hz/60Hz
Power consumption 25W ~ 58W
External dimensions Width 445x Height 137x Depth 432 mm (including terminal)
Panel operating part clearance 38 mm
Weight 12kg