AR(Acoustic Research) Limited Model 2
¥ 650,000 (around 1994)
Commentary
Limited Series control amplifier.
Since the signal is transmitted in a pure state, it is designed to be perfectly balanced from input to output. This eliminates the mixing of extra noise between contacts and ensures reliable signal transmission.
Parts used between circuits are selected as carefully as possible to maintain the purity of the program source.
For this reason, we have adopted a 4-layer 58-contact attenuator using a metal film resistor made by DALE and an elaborate hand-made Kuripush-type attenuator.
Model Rating
| Type | Control amplifier |
| Gain | Between balanced input and output : 0 dB Unbalanced input / output : 0 db, 6 db, 14 db variable Between unbalanced input and balanced output : 20 dB |
| Input impedance | Balance : 24k Ω Unbalanced : 50k Ω |
| Output impedance | Main Balance Out : 100 Ω Main Unbalanced Out : 50 Ω Tape Out : 1k Ω |
| Maximum Input (RMS) | Balance : 20 v Unbalanced : 10 v |
| THD & IMD | Not more than 0.001% |
| S/N ratio (A-weight) | 115dB |
| Input terminal | Balanced : 2 lines Unbalanced : Route 3, gold-plated RCA-pin |
| Output terminal | Balance : 1 system, main pre-out Unbalanced : 1 system, main pre-out Tape Out : 1 Line |
| Input / output balance connector polarity | Pin1 : Shield Pin2 : Hot (+) Pin3 : Cold (-) |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| External dimensions | Width 482.6x Height 101.6x Depth 330.2 mm |
| Weight | 6.75kg |