Aurex AD-4mkII
¥ 58,000 (around 1981)
Commentary
Adres unit equipped with 4-channel adres circuit.
The AD-4mkII has four built-in adres circuits and can use both encoding and decoding adreses simultaneously. Therefore, when used in combination with a 3-head deck, it is possible to monitor decoded signals simultaneously while recording.
Since two decks can be connected, it is possible to dub deck to deck without passing through an adres circuit. It is possible to directly dub adres encoded signals or normal signals.
In addition, a recording terminal is mounted on the front, and adres recording can be performed simultaneously on a total of three decks.
Equipped with a wide range peak meter of -40dB to + 12 dB. The attack time of this meter is 10 msec and quick response is possible.
The output level fine adjustment function is installed for the adres reference signal, and the signal output level can be adjusted to the adres reference level -3dB.
Encoding (adres recording) The output is 300 mv and can be used even on open decks with low input sensitivity.
Input and output volumes are mounted. These volumes can be used even when the adres is out.
The front terminal has priority over Deck 2 on the back for playback.
Model Rating
| Type | Adres unit |
| Number of channels | 4-channel (independent recording and playback) |
| Reference input level | Encoder : 100 mV Decoder : 150 mV |
| Reference output level | Encoder : 300 mV Decoder : 300 mV |
| Frequency characteristic | 20 Hz ~ 20 kHz ± 1 dB (at encoding / decoding) |
| Noise reduction effect | 17 dB or More (100 Hz) 20 dB or More (1 kHz) 30 dB or More (10 kHz) |
| Distortion factor | 0.10% or less (at 1 kHz, encode / decode) |
| Input jack | Input Decode in (3 sets each) |
| Output jack | Output Encode out (3 pairs each) Headphone |
| Power consumption | 11W |
| External dimensions | Width 420x Height 75x Depth 284 mm |
| Weight | 4.3kg |