CD 1
 ROM drive spins four times faster than any CD drive
 CD is read and analyzed multiple times until every bit is read faithfully
 Audio bitstream comes from an immense memory buffer, not directly from the CD
 User choice of an opamp or discrete analog output stage
 Three separate power supplies for analog and digital circuits
 Ultraquiet Rcore power transformer for the linear analog power supply
 Premium ConnorWinfield precision VCXO crystal clock for incredibly low jitter
 44.1 kHz CD data is upsampled to 352.8 kHz by an 8x interpolator
 Six layer DAC board for lower noise and point of use power delivery
 High performance, jitterresistant Analog Devices AD1853 DAC IC
 Ultraquiet National Semiconductor LME49990 audio opamps
 Proprietary software enables quieter running of the ROM drive
 0° or 180° absolute polarity selection by remote control
 Choice of silent or audible fast forward or fast back
 Unbalanced RCA and balanced XLR outputs
 Optical, Coax and BNC digital outputs
 BNC & RCA digital outputs are isolated by transformer coupling
 Massive aluminum partitions isolate each function
 Neutrik XLR and goldplated Vampire RCA jacks
 Full function remote control
Specifications
Frequency Response:20 Hz  20 kHz, +0/.05 dB
THD Distortion:< 0.06% at 1 kHz
S/N Ratio:> 108 dB, IHF Aweighted
Crosstalk:> 77 dB at 20 kHz
Maximum Output Level Unbalanced:2.0 Volts
Maximum Output Level Balanced:4.0 Volts
Output Impedance Unbalanced:100 Ohms
Output Impedance Balanced:200 Ohms
AC Power Requirement:115 Volts, 60 Hz or 230 Volts, 50 Hz
(Rear panel switch selects 115V or 230V operation)
Power Consumption: 45 Watts
Standby Power Consumption: 0.5 Watt
Dimensions:Width: 17 1/4" (437 mm) Depth: 13 3/4" (350mm)
Height, with feet: 4 1/8" (105mm) Height, without feet: 31/2" (89mm)
Weight:Net: 18 lbs. (8.2 kg) Shipping: 25 lbs. (11.3 kg)
Rack Mount Accessory:HRA 2 (May be purchased separately)

A 31
 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
 Adjustable gain for up to +6db over THX Reference level
 Unbalanced RCA and balanced XLR inputs
 Circuitry designed by legendary John Curl
 High bias class A/AB operation
 Direct coupled (no capacitors or inductors in signal path)
 Complementary MOSFET driver stage and JFET input stage
 24 betamatched 15 amp, 60 MHz bipolar output transistors
 1.5 kVA encapsulated toroid power transformer with independent
secondary windings for each channel
 98,400 µF power supply filter capacitance
 DC Servo and relay protection circuits
 AC present, channel status, high temperature indicators
 Heavyduty 24k goldplated 5way speaker terminals
 THX Ultra2 certified
 Auto turnon by 12v trigger or audio signal
 4u Chassis, carry handles, rack mounting adapter included
 Parasound 5 year parts, 5 years labor warranty (For USA and Canada purchases only)
Specifications
Continuous power output:
250 watts RMS x 3, 20 Hz  20 kHz, 8 Ω, all channels driven
400 watts RMS x 3, 20 Hz  20 kHz, 4 Ω, all channels driven
Current capacity:60 amperes peak per channel
Power bandwidth:5 Hz  100 kHz, +0/3 dB at 1 watt
Total harmonic distortion:< 0.2 % at full power
IM distortion: balanced 16 V rms < 0.04 %
Slew rate:> 130 V/µsecond
Dynamic headroom:> 1.5 dB
Interchannel crosstalk:> 78 dB at 1 kHz; > 63 dB at 20 kHz
Input sensitivity:1 V for 28.28 V (THX Reference)
Input impedance:47 k Ω unbalanced; 94 k Ω balanced
S/N ratio:112 dB, input shorted, IHF Aweighted
Damping factor:> 1100 at 20 Hz
Dimensions:171/4" w x 75/8" h x 191/8" d, 7" h without feet Net weight: 65 lb.
Shipping weight: 79 lb.

JC 3 Phono Preamplifier Parasound Halo JC 3 Phono Preamplifier is the pinnacle of analog audio technology and value engineering. It is legendary designer John Curl's latest design, carrying on a proud tradition of phono preamp designs dating back to the 1970s.
Specifications
Frequency Response
20 Hz – 20 kHz, +/ 0.2 dB
THD Distortion
THD: < 0.005% at 20 kHz
S/N Ratio (MM)
> 86 dB, input shorted, IHF Aweighted
> 80 dB, input shorted, unweighted
S/N Ratio (MC)
> 75 dB, input shorted, IHF Aweighted
> 70 dB, input shorted, unweighted
Crosstalk
72 dB at 1 kHz
Phono Input Impedance
MM setting: 47k ohm
MC setting: 47k ohm or 100 ohm
Output Impedance
Unbalanced: < 100 ohm
Balanced: < 100 ohm per leg
Input Sensitivity at 1 kHz
MM: 4mV in for 1.0V output
MC: 0.4mV for 1.0V output
Total Gain
MM: 47 dB
MC: 68 dB
XLR Pin Identification
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)
AC Power Requirement
115 or 230 VAC 50 – 60 Hz
12 watts
Dimensions
Width: 17 1/4″ (437 mm)
Depth: 13 3/4″ (350mm)
Height, with feet: 4 1/8″ (105mm)
Height, without feet: 31/2″ (89mm)
Weight
Net: 18 lbs. (8.2 kg)
Shipping: 25 lbs. (11.4 kg)
Rack Mount Accessory
HRA 2 (May be purchased separately)

JC 2 BP Preamplifer with Bypass The JC 2 BP is identical to the the original JC 2 stereo preamplifier, with the addition of a home theater Bypass function. The new Bypass function enables your surround system's left and right front speakers and their power amplifier to do double duty as the left and right channels of an analog stereo system.
Specifications
Frequency Response
5 Hz – 100 kHz, +0/3 dB
Distortion
THD: < 0.003% at 100 Hz
THD: < 0.005% at 20 kHz
IM: < 0.003%
S/N Ratio
> 116 dB, input shorted, IHF Aweighted
> 104 dB, input shorted, unweighted
Crosstalk
> 100 dB at 10 kHz
> 90 dB at 20 kHz
Gain
14 dB, maximum
L, R Gain Control Range
 10 dB
Input Impedance
Unbalanced: 30k ohms
Balanced: 30k ohms per leg
Output Impedance
Unbalanced: < 60 ohms
Balanced: < 60 ohms per leg
Input Sensitivity
200 mV for 1 V output
Total Gain: 14 dB
Maximum Output: 8 V
XLR Pin Identification
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)
AC Power Requirement
110 – 120 V or 220240 V, 50 – 60 Hzs
(Set AC Voltage switch on rear panel)
25 watt standby; 30 watts when turned on
Dimensions
Width: 17 1/4″ (437 mm)
Depth: 16″ (406 mm)
Height, with feet: 5 7/8″ (150 mm)
Height, without feet: 5 1/4″ (133 mm)
Weight
Net: 24 lbs. (11 kg)
Shipping: 36 lbs. (16.4 kg)
Rack Mount Accessory
HRA 3 (May be purchased separately)

JC 2 Preamplifier The Halo JC 2 is a pure analog preamplifier that is the product of pure genius. John Curl's CTC Builders, creators of our legendary JC 1 power amplifier, designed the JC 2 with the same stringent performance goals. We reach an amazing 116dB s/n ratio by isolating its dualmono audio circuits behind 3/8" thick shields. Balanced inputs and outputs, switchable polarity invert and full remote control are only part of the luxury of owning a Halo JC 2.
Specifications
Frequency Response
5 Hz – 100 kHz, +0/3 dB
Distortion
THD: < 0.003% at 100 Hz
THD: < 0.005% at 20 kHz
IM: < 0.003%
S/N Ratio
> 116 dB, input shorted, IHF Aweighted
> 104 dB, input shorted, unweighted
Crosstalk
> 100 dB at 10 kHz
> 90 dB at 20 kHz
Gain
14 dB, maximum
L, R Gain Control Range
 10 dB
Input Impedance
Unbalanced: 30k ohms
Balanced: 30k ohms per leg
Output Impedance
Unbalanced: < 60 ohms
Balanced: < 60 ohms per leg
Input Sensitivity
200 mV for 1 V output
Total Gain: 14 dB
Maximum Output: 8 V
XLR Pin Identification
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)
AC Power Requirement
110 – 120 V or 220240 V, 50 – 60 Hzs
(Set AC Voltage switch on rear panel)
25 watt standby; 30 watts when turned on
Dimensions
Width: 17 1/4″ (437 mm)
Depth: 16″ (406 mm)
Height, with feet: 5 7/8″ (150 mm)
Height, without feet: 5 1/4″ (133 mm)
Weight
Net: 24 lbs. (11 kg)
Shipping: 36 lbs. (16.4 kg)
Rack Mount Accessory
HRA 3 (May be purchased separately)

P 7 Preamplifier Among the P 7's ten inputs are two sets of 7.1 channel input jacks with a bypass switch to "insert" the P7 seamlessly between your surround receiver's 7.1 (or 5.1) channel preout jacks and your power amplifier. You can adjust leftright and frontrear balance, customname and match the gains for all sources, including the front panel portable MP3 player input jack. Analog bass management enables your subwoofer to function properly with two channel analog sources. The P7 has a balanced XLR input, 7.1 ch balanced XLR outputs, an MM/MC phono input and remote tone control. The RS232 control, discrete IR codes, an IR repeater input and 3 DC triggers invite system integration.
Specifications
Frequency Response:
5 Hz – 100 kHz, +0/3 dB
Total harmonic distortion:
< 0.006% at 20 kHz
S/N ratio:
> 110 dB, input shorted, IHF Aweighted
> 95 dB, input shorted, unweighted
Crosstalk:
85 dB at 20 kHz
Line Input Impedance :
Unbalanced: 14.2k Ω
Balanced: 4.7k Ω per leg
Phono Input Impedance :
MM setting: 47k Ω
MC setting: 100 Ω
Output Impedance :
Unbalanced: < 60 Ω
Unbalanced: < 60 Ω per leg
Input Sensitivity:
200 mV for 1 V output
Total Gain: 14 dB (Volume limiter set to 110)
Maximum Output: 8 V (Vol. Limiter set to 110)
XLR Pin Identification:
1 = Ground (Shield)
2 = Positive
3 = Negative
AC Power Requirement:
100 – 250 V / 50 – 60 Hz (voltage is automatically selected)
10 watts standby
65 watts when turned on
Dimensions:
Width: 171/4″ (437 mm)
Depth: 133/4″ (350 mm)
Height, with feet: 41/8″ (105 mm)
Height, without feet: 31/2″ (89 mm)
Weight:
Net: 13.5 lbs. (6.1 Kg)
Shipping: 20.5 lbs. (9.3 Kg)
Rack Mount Accessory:
HRA 2 (May be purchased separately)

P 3 Preamplifier The Halo P 3 preamplifier is a perfect control center for a high end two channel music system. Balanced XLR inputs and outputs, a lownoise phono stage and high current power supply are just three of its highperformance features.
Specifications
Frequency Response:
5 Hz – 55 kHz, +0/1 dB, full output
Total harmonic distortion:
< 0.01% 1 kHz; < 0.03% 20 kHz
IM distortion: balanced 16 V rms
< 0.03 %
Maximum Output :
> 8 V before clipping
Input Impedance :
> line input 30 kW; phono 47 kW
Output Impedance :
60 Ω
Input Sensitivity:
line inputs 150 mV, +/ 5%; phono 2 mV
Maximum Input level:
10.5 V before clipping
S/N ratio:
line input >92 dB, Aweighted, ref 1 V output
line input >84 dB, unweighted, ref 1 V output
Crosstalk:
> 55 dB, 20 kHz
Channel level matching:
< 0.1 dB
Voltage:
Switchable for 110V – 120V or 220V – 240V operation
Dimensions:
171/4″ w x 41/8″ h x 133/4 ” d, 35/8 ” h without feet
Net weight: 16 lb.

A 51 Amplifier The Halo A 51 is everything a great amplifier should be. Guided by legendary designer John Curl, we created a fivechannel amplifier with sonic qualities usually reserved for ultra highend stereo models. Its 250 watts per channel assures effortless reproduction of musical crescendos and movie special effects, while our exclusive class A/AB operation places the A 51 in a league b itself. As a rugged and refined workhorse, the A 51 will provide many years of high end audio enjoyment.
Specifications
Continuous power output:
250 watts RMS x 5, 20 Hz – 20 kHz, 8 Ω, all channels driven
400 watts RMS x 5, 20 Hz – 20 kHz, 4 Ω, all channels driven
Current capacity:
60 amperes peak per channel
Power bandwidth:
5 Hz – 100 kHz, +0/3 dB at 1 watt
Total harmonic distortion:
< 0.2 % at full power
IM distortion: balanced 16 V rms
< 0.04 %
Slew rate:
> 130 V/μsecond
Dynamic headroom:
> 1.5 dB
Interchannel crosstalk:
> 78 dB at 1 kHz;
> 63 dB at 20 kHz
Input sensitivity:
1 V for 28.28 V, THX Reference Lev
Input impedance:
47 k Ω unbalanced; 94 k Ω balanced
S/N ratio:
112 dB, input shorted, IHF Aweighted
Damping factor:
> 1100 at 20 Hz
Voltage:
110V – 120V
Dimensions:
171/4″ w x 75/8″ h x 20″ d, 7″ h without feet
Net weight: 80 lb.

A 52 Amplifier The Halo A 52 is a less powerful version of our flagship A 51 amplifier. Both the A 51 and A 52 utilize JFET inputs, MOSFET drivers and a high current bipolar output stage for unmatched warmth, speed, and control. Independent power supplies for all five channels reduce crosstalk so you will hear each instrument and special effect precisely where the recording engineer intended. With a host of features and an attractive price, the A 52 is an elegant addition to your home theater.
Specifications
Continuous power output:
125 watts RMS x 5, 20 Hz – 20 kHz, 8 Ω, all channels driven
225 watts RMS x 5, 20 Hz – 20 kHz, 4 Ω, all channels driven
Current capacity:
30 amperes peak per channel
Power bandwidth:
5 Hz – 100 kHz, +0/3 dB at 1 watt
Total harmonic distortion:
< 0.2 % at full power
IM distortion: balanced 16 V rms
< 0.04 %
Slew rate:
> 130 V/μsecond
Dynamic headroom:
> 1.5 dB
Interchannel crosstalk:
> 78 dB at 1 kHz;
> 63 dB at 20 kHz
Input sensitivity:
1 V for 28.28 V, THX Reference Level
Input impedance:
47 k Ω unbalanced; 94 k Ω balanced
S/N ratio:
113 dB, input shorted, IHF Aweighted
Damping factor:
> 1000 at 20 Hz
Voltage:
110V – 120V
Dimensions:
171/4″ w x 57/8″ h x 193/4 ” d, 51/4 ” h without feet
Net weight: 50 lb.

JC 1 Renowned designer John Curl has endowed the JC 1 with unequaled sound quality and prodigious power—400 watts into 8 ohms, 800 watts into 4 ohms backed by 135 amps peak current. Its first 25 watts operate in pure Class A for transparency to match its prowess. Since its introduction in 2003 the JC 1 has earned the unqualified respect and admiration of reviewers, manufacturers of the finest loudspeakers and most importantly, from audio fans worldwide.
Specifications
Continuous power output, 20Hz – 20 kHz:
400 watts RMS x 1, 8 Ω
800 watts RMS x 1, 4 Ω
1200 watts RMS x 1, 2 Ω
Class A power output, 20Hz – 20 kHz:
25 watts, bias set to high, 8 Ω
10 watts, bias set to low, 8 Ω
Current capacity:
135 amperes peak
Power bandwidth:
2 Hz – 120 kHz, +0/3 dB at 1 watt
Total harmonic distortion:
< 0.15 % at full power
IM distortion: balanced 16 V rms
< 0.03 %
Slew rate:
> 130 V/μsecond
Dynamic headroom:
> 1.8 dB
Input sensitivity:
1 V for 28.28 V, THX Reference Level
Input impedance:
100 k Ω
S/N ratio:
>120 dB, IHF Aweighted, bias set to high
>122 dB, IHF Aweighted, bias set to low
Damping factor:
> 1200 at 20 Hz
Power Requirement :
250 watts idle 1280 watts full power into 4 Ω
DC trigger output capacity :
+12 Vdc, 150 mA
Dimensions:
171/4″ w x 75/8″ h x 20 ” d, 7 ” h without feet
Net weight: 64 lb.

A 21 Amplifier The Halo A 21 is an extraordinary amplifier for your home theater or for use in a dedicated stereo system. We reduce unwanted noise by encasing the massive toroid power transformer in a steel cap to contain its magnetic field. Premium fastrecovery filter capacitors provide enormous power reserves for transient peaks, while doublesided epoxy circuit boards provide superior grounding. The A 21 is an engineering triumph built for years of listening pleasure.
Specifications
Continuous power output:
250 watts RMS x 2, 20 Hz – 20 kHz, 8 Ω, all channels driven
400 watts RMS x 2, 20 Hz – 20 kHz, 4 Ω, all channels driven
750 watts RMS x 1, 20 Hz – 20 kHz, 8 Ω
Current capacity:
60 amperes peak per channel
Power bandwidth:
5 Hz – 100 kHz, +0/3 dB at 1 watt
Total harmonic distortion:
< 0.2 % at full power
IM distortion: balanced 16 V rms
< 0.04 %
Slew rate:
> 130 V/μsecond
Dynamic headroom:
> 1.5 dB
Interchannel crosstalk:
> 80 dB at 1 kHz;
> 63 dB at 20 kHz
Input sensitivity:
1 V for 28.28 V, THX Reference Level
Input impedance:
33 k Ω unbalanced; 66 k Ω balanced
S/N ratio:
112 dB, input shorted, IHF Aweighted
Damping factor:
> 1100 at 20 Hz
Voltage:
110V – 120V
Dimensions:
171/4″ w x 75/8″ h x 191/8″ d, 7 ” h without feet
Net weight: 60 lb.

A 23 Amplifier The Halo A 23 has it all—sophisticated design, worldclass parts quality, highly refined sound, and an affordable price. We built our reputation on sonic clarity and detail, so our advanced DC servo circuits take the place of the coupling capacitors and inductors still used in other brands of power amps. With its amazing sound and beautiful design the A 23 delivers everything that you have come to expect from a Parasound amplifier.
Specifications
Continuous power output:
125 watts RMS x 2, 20 Hz – 20 kHz, 8 Ω, both channels driven
225 watts RMS x 2, 20 Hz – 20 kHz, 4 Ω, both channels driven
400 watts RMS x 1, 20 Hz – 20 kHz, 8 Ω
Current capacity:
45 amperes peak per channel
Power bandwidth:
5 Hz – 100 kHz, +0/3 dB at 1 watt
Total harmonic distortion:
< 0.06 % at full power
IM distortion: balanced 16 V rms
< 0.04 %
Slew rate:
> 130 V/μsecond
Dynamic headroom:
> 1.5 dB
Interchannel crosstalk:
> 80 dB at 1 kHz;
> 63 dB at 20 kHz
Input sensitivity:
1 V for 28.28 V, THX Reference Level
Input impedance:
33 k Ω
S/N ratio:
112 dB, input shorted, IHF Aweighted
Damping factor:
> 800 at 20 Hz
Voltage:
Switchable for 110V – 120V or 220V – 240V
Dimensions:
171/4″ w x 41/8″ h x 131/4″ d, 35/8 ” h without feet
Net weight: 28 lb.
