| Form Factor | Freestanding |
| Signal Path | Hybrid Analog / Digital Hardware |
| Channels | 2 Channel |
| Controls | - Channel 1 Record Level · Rotary Pot
- Channel 1 Rep/Sync Level · Rotary Pot
- Channel 2 Record Level · Rotary Pot
- Channel 2 Rep/Sync Level · Rotary Pot
- Play · Latching Push Switch · On/Off
- Stop · Momentary Push Switch · On/Off
- RW · Latching Push Switch · On/Off
- FW · Latching Push Switch · On/Off
|
| Displays | - VU Meter · Channel 1 Gain · -20 to +3 db
- VU Meter · Channel 2 Gain · -20 to +3 db
- Light · Ready · On-Off
- Light · Rec · On-Off
|
| Links | Audio Archive - Marketing Brochure · Manufacturer's Info |
| Notes | Equipped with 5 motors: 3 DC motors for the tape transport and 2 synchronous motors for the low-noise pinch roller unit. Rugged, high-torque motors with disc-type rotors featuring favorable control characteristics are used for the spooling functions; a top-quality closed-loop servo control system and a separate processor are responsible for the excellent drive characteristics and the new tape processing facilitites.
Actual values concerning tape tension, spooling motor speeds, and sense of rotation are supplied to the processor by non-contacting sensors. The reference values for tape tension and spooling speed are software-defined and stored in memory.
The processor control of the STUDER A820 automatically determines the moment of inertia of the mounted reels and optimizes from these values all acceleration and braking operations. The motor output stages equipped with power FETs operate in switched mode, very high efficiency, and correspondingly low heat dissipation; no cooling fans are required for the A820. |
