Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
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Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.

Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.

Our last trading day before the holidays is 20th December, and we will reopen on 13th January.

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SoundStream REF2.640 1/2 Channel Amplifier

SKU: REF2.640
SoundStream REF2.640 1/2 Channel AmplifierSoundStream REF2.640 1/2 Channel Amplifier
$999
$999$319.85
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Full Australian Warranty
  • Express to Metro (1-3 biz days)
  • Standard to Metro (2-6 biz days)
  • Express to Non-metro (2-6 biz days)
  • Standard to Non-metro (5-20 biz days)
  • Pickup (Same or next biz day)
  • Longer ETA applies to NT, WA, NZ & US locations.
  • The above time frames are estimates only. The actual delivery time is dependent on the shipping location, shipper's processing capacity and other unforeseeable factors i.e. natural disasters, accidents etc. We cannot be held responsible for any courier-related delivery delays.
This product is discontinued
  • Out of Stock
  • Model: SoundStream REF2.640
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Visit us at 3/229 Robinsons Road, Ravenhall, VIC
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640W Reference Series 2-Channel Class A/B Amplifier


  • RMS Power Rating:
    • 4 ohms: 190 watts x 2 Ch
    • 2 ohms: 320 watts x 2 Ch
    • Bridged, 4 ohms: 640 watts x 1 Ch
  • Triple Darlington Audio Output Stages
  • Full Signal Path Low Noise/Distortion Circuitry Topology
  • Hawkins Boost Control Proprietary Bass Equalization
  • Continuously Variable Crossovers
  • Vortex induction fan thermo management
  • Ultra-low ESR capacitors ensure rapid power delivery for dynamic peaks
  • Harmonic Bass Alignment produces tighter, clean bass
  • Rail stabilization protection circuitry
  • Balanced line inputs for highest noise rejection
  • BIP (Bias Input Protection)
  • Heavy duty aluminum alloy heatsink for extreme heat dissipation
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Bass remote control included
  • Bass Boost (30-80 Hz, 12 dB/octave)

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