Parasound A23+

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Changes from the original A 23→A 23+

  • 125 → 160 Watts (8Ω)

  • 225 → 240 Watts (4Ω)

  • 400 → 500 Watts (bridged)

  • Filter cap: 40,000 uF →54,400 uF

  • Crosstalk (20kHz): 63dB → 70dB

  • Transformer size: 1.0 kVA → 1.1 kVA

  • Refined Halo cosmetic with aluminum end caps & gold highlights

  • Updated rear panel with heavy duty speaker terminals from HINT 6

  • Upgraded internal gold on gold audio connections

  • Updated auto turn on circuit

All Features

  • 160 watts x 2 @ 8 Ω RMS, both channels driven

  • 240 watts x 2 @ 4 Ω RMS, both channels driven

  • 500 watts x 1 @ 8 Ω, in bridged mode

  • Circuitry designed by legendary John Curl

  • High bias Class A/AB operation

  • 45 amperes peak current per channel

  • Stable with speaker impedance dips below 2 Ω

  • Balanced inputs with discrete circuits

  • Heavy-duty 24k gold-plated 5-way speaker binding posts

  • Gold-plated RCA input & loop output jacks

  • Direct-coupled signal path, no capacitors or inductors

  • DC Servo and relay protection circuits

  • AC turn-on inrush surge protection with relay bypass

  • JFET input stage, MOSFET driver stage

  • 12 beta-matched 15 ampere, 60 MHz bipolar output transistors

  • 1.1 kVA shielded toroid transformer w/ independent windings for each channel

  • Independent power supplies for input stage, driver stage and output stage

  • 54,400 µF filter capacitors for output stages

  • Full power is rated all the way down to 5Hz for unrestricted low-end bass

  • Harris hyper-fast soft-recovery bridge diode rectifiers

  • Automatic turn-on by 12 V trigger or audio sensing

  • 2 rack space chassis with rear carry handles

  • Rack mount hardware available separately

  • Available in silver or black

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