Parasound Amps

Halo Integrated
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 Ω or 47k Ω 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
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)
240 Watts x 2 @ 4 Ohms (RMS, both channels driven)
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
10 Hz – 100 kHz, +0/-3 dB Total Harmonic Distortion (THD)
< 0.01 %, average listening levels
< 0.05 %, 160 watts x 2 @ 8 Ω Interchannel Crosstalk
Total Preamp Stage Gain: 10 dB
Total Amp Stage Gain: 28 dB Phono Stage Sensitivity / Input Impedance
Input Impedance
MM: 35 dB / 47 k Ω
MC: 52 dB / 47 k Ω or 100 Ω Continue reading

NAD Preamps


Rated Distortion (THD+N with AES 17 filter)0.0005% (0dBFS)0.002% (-60dBFS)IMD Distortion0.0001%
Signal/Noise Ratio123dB (ref. 0dBFS 2V out)
Channel Separation115dB (ref. 0dBFS Volume -1dB)
Sample Rate32kHz to 192kHz (USB and digital S/PDIF)
Frequency Response±0.5dB (ref. 20Hz – 96kHz @ 192kHz sample rate)
Output Level2V (ref. input 0dBFS)
AES/EBU XLRSPDIF Coaxial x 1Optical x 1HDMI x 2 (2-channel PCM)USB Class 2 Audio: asynchronous 24/192 supportIR InTrigger In12V ±20%
HDMI Video Out (3D video pass through)
Analogue Unbalanced47 ohmsBalanced110 ohmsTrigger Out12V ±20%



6 Line Level Inputs
Phono Input with selectable Moving Coil and Moving Magnet sensitivity settings
3 position Resistance and Capacitance settings for Phono Input
2 Line Level Outputs, one variable from 0dB to -12dB
Subwoofer Output
Independent Headphone Amplifier
Pure Class A Gain Modules
Sealed Reed Relays for Input Switching
Heavy Gauge Steel Chassis
Bass and Treble Controls with Defeat Switch (bypass]
Gold Plated Sockets
12V Trigger Output
IR In and Out
Detachable Power Cord
SR 8 NAD 4 Device System remote Control
<1 watt Standby Consumption

NAD Amplifiers

Here are some reasonably priced amplifiers from NAD:

C 316BEE with phono Integrated amp

THD (20 Hz – 20 kHz) <0.03 % in 300 ohms at 2 V outSignal-to-Noise Ratio >100 dB (A-weighted, 32 ohms, ref. 2V out, unity gain)Frequency response ±0.3 dB (20 Hz – 20 kHz)Output impedance 8 ohms
Continuous output power into 8 ohms and 4 ohms 40W (ref. 20 Hz-20 kHz at rated THD, both channels driven)THD (20 Hz – 20 kHz)
<0.03 % (250 mW to 40 W, 8 ohms and 4 ohms)

Signal-to-Noise Ratio >95 dB (A-weighted, 500 mV input, ref. 1 W out in 8 ohms)
>97 dB (A-weighted, 500 mV input, unity gain in 32 ohms)Clipping power (at 1 kHz 0.1 % THD) >45 W in 8 ohms
>60 W in 4 ohmsIHF dynamic power 8 ohms: 90 W
4 ohms: 120 W
2 ohms: 170 WDamping factor>200 (ref. 8 ohms, 1 kHz)Frequency response ±0.3 dB (20 Hz – 20 kHz, Tone Defeat ON)
Treble: ± 5dB at 10 kHz
Bass: ± 8 dB at 100 HzChannel separation >70 dB (1 kHz)Maximum input level 4.3V (1 kHz THD 0.1%)Input sensitivity (for 40 W in 8 ohms) 200 mVStandby power <0.5 W

THD (20 Hz – 20 kHz) <0.03 % (1 W to 40 W, 8 ohms and 4 ohms)Signal-to-Noise Ratio >75 dB with IHF MM cartridge (A-weighted, ref. 5mV input 1 kHz and 1W output in 8 ohms)Frequency response (RIAA deviation) +0.3 dB (20 Hz – 20 kHz, Tone Defeat ON)Maximum input level 71 mV (1 kHz THD 0.1%)Input sensitivity (for 40 W in 8 ohms2.95 mV Continue reading