New Version v.2 Features

This is the new v.2 version of the Model 275 with several new features for enhanced performance and convenience. First is a new A/B speaker button lockout switch on the rear panel. When this switch is set to Lockout, the front panel A and B buttons are disabled and speakers A and B will always be on. This can be particularly useful for a professional audio installer who never intends for the client to use the front panel buttons.

The new ultra-sensitive two-position audio trigger allowed Parasound to eliminate the audio trigger sensitivity knob. A 'Quieter' setting will automatically turn on the amp at a very low volume. If this isn't sensitive enough for your system needs, you can also use the 'Louder' setting.

The 12 volt trigger jacks change from 2.5mm to 3.5mm. The standard for 12 volt triggers in the audio world has become the 3.5mm size and all new Parasound products will change to use this larger size.

Here's one more change to the rear panel. The ground lift switch has been removed. Changes to the internal grounding of the amps make this switch unnecessary.

To conserve energy and meet Energy Star and EU power consumption requirement NewClassic amps only require 0.5 watts in standby.

Updated front and rear cosmetics give the v.2 amps a fresh new look. The front panel has been updated with rounded corners, a new display lens, and updated silk screening. The rear panel has updated silk screening making it easier to read and understand the functions.

There's also a power specification increase. The original versions of the NewClassic amps were underrated. With the v.2 amps, Parasound has changed the specification to match the actual capability of each amp. There is an average rating increase of 10-15%. Both version 1 and v.2 amps have the same power and there are no changes to the audio circuits.

The Perfect Amp for Smaller Rooms

The Model 275 v.2 is the perfect amplifier for smaller rooms with its 90-watt-per-channel output at 8 ohms and 150 watts at 4 ohms. It will also deliver 200 watts into 8 ohms or 4 ohms in bridged mono mode. And it boasts 30 amps of peak current per channel for superior resolution of demanding musical peaks. The sound quality is pure Parasound pleasure, of course.

Fully Discrete Circuitry

Fully discrete circuitry with a large toroidal transformer keeps the noise floor exceptionally low and the musical signal pure. The 'Class AB' circuitry provides efficient operation with less heat output than pure 'Class A' for the highest degree of reliability with DC servo and relay protection circuitry. Standby, channel status, and high temperature indicators keep you informed of the operation status.

Ideal for Custom Installations

The NewClassic amplifiers have several features that make them ideal for custom installation. These include automatic switch on and off when the amplifier detects the presence or absence of an audio signal. It can also switch on and off via its DC trigger with looping output. The soft touch power buttons glow in standby mode.

Features

- 90 watts x 2 into 8 Ω (all channels driven)

- 150 watts x 2 into 4 Ω or 2 Ω (all channels driven)

- 200 watts x 1 bridged into 8 Ω or 4 Ω

- 20 amps peak current per channel

- 2 Ohm stable operation with load selector switch

- Two pairs of speaker outputs with front panel A/B buttons

- Rear-mounted lockout switch disables front A/B buttons

- High pass filter, switchable for 20Hz or 40Hz

- Automatic on/off by DC trigger with looping output

- Automatic on/off by audio signal with 2 sensitivity settings

- Fully discrete circuitry with high current toroid transformer

- Bridging switch for stereo or mono operation

- Efficient, low heat design

- DC Servo and relay protection circuits

- Rear-mounted left and right gain controls

- Standby, channel status and high temperature indicators

- Gold-plated RCA input jacks

- Heavy duty 24k gold-plated 5-way speaker terminals

- 115/230v selector on rear panel

- 1U rack mount kit available separately ( Model RMK11 )

Parasound NewClassic 275 v.2 Power Amplifier User's Manual

Specifications

Power Output - ( RMS power, 20 Hz - 20 kHz ) 
All Channels Driven 
90 watts x 2, 8Ω 
150 watts x 2, 4Ω 
150 watts x 2, 2Ω (Load switch set to 2-3Ω)

Bridged Mono 
200 watts x 1, 8Ω 
200 watts x 1, 4Ω ( Load switch set to 2-3Ω )

Current Capacity: 20 amps peak per channel

Frequency Response: 20 Hz - 50 kHz, +0/-3 dB, 1 watt

Dynamic Headroom - 1.3 dB

Total Harmonic Distortion 
0.35% at full rated output 
0.025% at average listening levels

IM Distortion - 0.05 %

Transient IM Distortion - Not measurable

S/N Ratio 
110 dB at rated output, IHF A-weighted 
103 dB at rated output, unweighted 
93 dB at 2.828 V output, IHF A-weighted 
84 dB at 2.828 V output, unweighted

Input Impedance - 33 k Ω

Input Sensitivity: 800 mV for full rated output ( 28dB )

Inter-Channel Crosstalk: 80 dB @1 kHz, 72 dB @10 kHz, 65 dB @ 20kHz

Damping Factor - Over 150 at 20Hz

12V Trigger Turn On - DC 9 - 12V, 15 mA

Audio Turn On 
Quieter: 1 mV 
Louder: 6 mV

AC Power Requirement 
110 - 120 V / 220 -240 V, 50 - 60 Hz 
0.5 watts standby 
25 watts with no audio
350 watts full output

Dimensions 
17^1/4" Wide 
16" Deep, with cables connected 
2^1/2" High with feet, 1^3/4" panel only ( 1 Rack Unit ) 

Net Weight - 20 lbs 

Rack Mount Accessory 
May be Purchased Separately 
RMK11