Halo by Parasound 2.1 Channel Integrated Amplifier

Preamp and DAC Features

• Latest generation ESS Sabre32 Reference DAC (ES9018K2M)
• Asynchronous USB 2.0 supports PCM up to 384kHz/32-bit
• USB input decodes Native DSD64, DSD128, DSD256 and DoP DSD
• Coax and optical accept PCM up to 192kHz/24-bit
• Analog bass management with high & low pass crossovers
• Home theater bypass input for surround sound integration
• Front panel subwoofer level control
• Dedicated high current headphone amplifier (TI TPA6120)
• Phono for MM & MC with 100 O or 47k O load
• Front panel Aux input with automatic +12 dB gain stage
• 5 pairs RCA line level Analog inputs
• 1 pair XLR balanced Analog input
• Balanced XLR and RCA left and right preamp outputs
• 1 balanced XLR and 2 RCA subwoofer outputs z
• Bass & treble controls with relay bypass from remote or front panel
• Rear panel IR input and IR loop output jacks
• 12 Volt input and output to triggers
• Back-lit remote control with discrete buttons
• 0.5w standby power consumption meets Energy Star & EU specs

Power Amp Features

• 160 Watts x 2 @ 8 Ohms (RMS, both channels driven)
• 160 Watts x 2 @ 8 Ohms (RMS, both channels driven)
• Power amp circuit topology designed by legendary John Curl
• Direct amplifier input to bypass preamp section
• High bias class A/AB operation
• Oversized shielded toroid power transformer
• Dual-mono power supply and power amplifier
• 40,000uF power supply filter capacitance
• Matched JFET input stages and MOSFET driver stages
• 12 high voltage/high current bipolar output transistors
• Heavy-duty 24k gold-plated 5-way speaker binding posts
• Over temp and short circuit relay protection

Power Output - Both channels driven

• (0.05% THD, RMS, 20 Hz - 20 kHz)
• 160 watts x 2 @ 8 O
• 240 watts x 2 @ 4 O

Power Output - Both channels driven

• (0.9% THD, RMS, 20 Hz - 20 kHz)
• 180 watts x 2 @ 8 O
• 270 watts x 2 @ 4 O

Current Capacity

• 45 amps peak per channel

Frequency Response

• 10 Hz - 100 kHz, +0/-3 dB

Total Harmonic Distortion (THD)

• < 0.01 %, average listening levels
• < 0.05 %, 160 watts x 2 @ 8 O

Interchannel Crosstalk

• > 50 dB at 20 kHz
• > 70 dB at 1 kHz

Signal to Noise Ratio - IHF A-weighted

• Line in: - 103 dB (input shorted)
• Digital in: - 106 dB

Amplifier Damping Factor

• > 800 at 20 Hz

Preamp Stage Input Sensitivity

• 300 mV in for 1 V at Pre Out jacks
• Total Preamp Stage Gain: 10 dB
• Max Output Unbalanced: 7 V
• Max Output Balanced: 9 V

Power Amplifier Stage Sensitivity

• 1 V at Bypass/Amp In for 28 V at Speaker Out
• Total Amp Stage Gain: 28 dB

Phono Stage Sensitivity / Input Impedance

• MM: 35 dB / 47 k O
• MC: 52 dB / 47 k O or 100 O
• Input Capacitance: 150 pF

High & Low Pass Crossover Slopes

• 12 dB per octave

Supported DAC Sampling Rates

• USB: up to 384 kHz / 32-bit PCM
• DSD Native: DSD 64, DSD 128, DSD 256
• DSD over PCM (DoP) at 384 kHz
• Coax/Opt: up to 192 kHz / 24-bit PCM

Digital to Analog Converter

• ESS Sabre32 Reference ES9018K2M
• 384 kHz / 32-bit

USB 2.0 Controller

• VIA VT1731, 384 kHz / 32-bit

Headphone Amplifier

• Texas Instruments TPA6120A
• Output Impedance 10 ohms

XLR Pin Identification

• 1 = Ground (Shield)
• 2 = Positive
• 3 = Negative (Return)

Input Impedance

• Unbalanced: 24 k O
• Balanced: 100 k O per leg

Output Impedance

• Unbalanced: 100 O
• Balanced: 470 O per leg

Power Requirement

• Standby: 0.5 watts
• Idling power: 70 watts
• Maximum: 750 watts
• 110-125 VAC 60 Hz or 220-250 VAC 50 Hz
• AC mains voltage is set on rear

Dimensions

• Depth without cables: 16.25
• Height without feet: 5.25

Useful Documents