ESC
System III Sirius

System III Sirius

BrandRockport Technologies
DesignerAndy Payor
FunctionTurntable
Produced2000
CountryUnited States
Model IDSirius III
Form FactorFloorstanding
Signal PathAnalog Hardware
Dimensions61 × 81.3 × 48.3 cm (W × H × D)
Weight550lbs
Speed Select45 rpm
Speed Select33⅓ rpm
Drive TypeDirect Drive Magnetic Induction (Mass: 25lbs)
SuspensionAir-bearing
Total Radial and Axial Error<0.000005"
Speed Accuracy10ppm
TonearmAir-bearing, Linear Tracking
Tonearm CompositionConstrained-Layer Damped, 8-ply Carbon Fiber/Epoxy Composite Coaxial Tube
DampingActive Pneumatic-Suspension
System Resonance Frequency1Hz
Isolation (1G Acceleration)120dB
PlinthEpoxy-Composite, Lead-ballasted (Mass: 185lbs)
Platter303 Stainless-Steel with high-hysteresis, mineral-filled PVC damping layer (Mass: 62lbs)
Number Built38
MSRP$73,750
Channels2 Channel
Connections
  • Output · RCA (Phono, Cinch) · Stereo, Unbalanced
  • Motor Control · Other
  • Compressor · Other
Controls
  • Power · Momentary Push Switch
  • Vacuum Holddown · Momentary Push Switch
  • Speed Select · Momentary Push Switch
  • Speed Select · Momentary Push Switch
  • Spindle Adjust
  • Tonearm Adjust
Displays
  • LED · Pressure
  • LED · Compressor
  • LED · Vacuum Holddown
  • LED · 33⅓rpm
  • LED · 45rpm
  • LED · Speed Sync Lock
  • Gauge · Spindle Pressure
  • Gauge · Input Pressure
  • Gauge · Tonearm