The design begins with gold plated RCA inputs or optional Euroblock (Phoenix style) connectors for each channel. A stereo bus input may be used to feed any or all channels simultaneously from a single source. This is paralleled on the front panel via a convenient 3.5mm input for an iPhone, tablet, or Bluetooth interface. Speaker outputs also employ detachable Euroblock (Phoenix style) connectors for easy termination.

As with all Hafler amplifiers, sound quality and reliability are paramount. Unlike other multichannel amplifiers that use sonically compromising class-D or H switch-mode designs, the Hafler CI-1255e employs true class AB architecture to deliver 55 watts RMS per channel (100W peak) of pure power at 8 ohms and 70 watts RMS (140W peak) at 4 ohms on each channel. Channels 11 and 12 may be configured in bridged mono mode to deliver 180 watts RMS to power a subwoofer. Individual gain controls on each channel allow for precise adjustments for each of the 12 zones. Front and rear panel signal presence LEDs provide further aid during setup by allowing for visual monitoring of signal flow. Should a fault be encountered, the CI-1255e will automatically shut down the compromised channel and self-reset when the fault is removed. This is augmented with peak LEDs on the front panel to monitor signal levels for each zone. An OmniPort? allows for additional connectivity choices with optional modules for a Dante digital network card, Jensen transformer-isolated inputs, or Euroblock inputs.

Housed in a compact 17" x 3.5" x 11.5" (432 x 89 x 292mm) solid steel enclosure, the CI-1255e may be rack-mounted in a standard 19" 2 RU rack using optional rack ears. An ultra-quiet side-mounted HushTone? fan generates a mere 22dB as it circulates air to cool the unit. The CI-1255e is equipped with an ECOSYSTEM energy conservation circuit, which will automatically shut off the amplifier after one minute when not in use and will power-up in just 10 milliseconds once an audio signal is detected at any of the inputs. To address international usage, the CI-1255e is equipped with a dual-voltage toroidal power transformer with a selector switch for 115V and 230V operation, and is safety certified for use throughout North America and Europe.

The Hafler CI-1255e delivers legendary reliability and unparalleled sound quality for the most demanding multi-zone installations.

OmniportTM
Each Hafler multichannel amplifier features an innovative Omniport expansion slot, which allows separate modules to be installed that add useful features and increase the functionality of the amplifier. Available Omniport modules include USB, HDMI, and balanced Euroblock inputs-even the ability to connect to a Dante-enabled digital network. With Omniport, you can tailor your CI-series amp to suit your current connectivity needs or adapt to future requirements with ease.

ecoSYSTEMTM
ECOSYSTEM is a remarkable energy saving feature that benefits the environment and dramatically reduces energy costs. When the amplifier isn't in use, it automatically powers down, reducing both amplifier energy costs as well as the associated air conditioning costs that are required to cool the room and offset the heat of the amp. Once signal is present at any of the inputs, the CI-1255e springs back to life in as little as 10 milliseconds. Best of all, it turns on and off with no clicking noise, so you'll never hear the difference, you'll only notice it on your energy bill.

Fault-SafeTM
The CI-1255e provides peace of mind with Fault-Safe automatic fault protection circuitry. Each individual channel is fully protected against overheating, overloading, low impedance, over voltage and under voltage. Should any of these faults occur, Fault-Safe shuts down any affected channels. The protection circuitry automatically restores each amplifier channel as soon as conditions return to a safe operating range.

# of Channels: 12

Inputs: Gold RCA jacks with adjustable gain, 3.5mm global bus input

Optional Analog Inputs: Euroblock (Phoenix style) connectors

Optional Digital Inputs: Dante network connection over Ethernet

Outputs: Euroblock (Phoenix style) connectors

Input Impedance: 22k ohms

Output Power: 55 watts RMS per channel (8 ohms)

Peak Output Power: 100 watts per channel (8 ohms)

Bridged Output Power: 120 watts per channel (8 ohms only)

Ideal Impedance: 6 - 8 ohms

Frequency Response: +/-0.5dB from 15Hz - 50kHz

S/N Ratio: > 102dB (A weighted)

THD Distortion: < 0.1% 20Hz to 20kHz

IMD Distortion: < 0.01%@ 60Hz

Common Mode Rejection: -70dB direct coupled, -90dB with Jensen transformer option

HushTone Fan Noise: 22dB maximum

Power (Maximum): 750 watts at 117VAC or 230VAC

Gain control: -40dB to +20dB for each channel

Voltage Requirements: 115V 60 Hz, 230V 50Hz

Damping Factor: 400

Maximum wire gauge: 10-gauge (2.59mm)

ECOSYSTEM shut-off time: Automatically variable 40-200s

ECOSYSTEM turn-on time: 10ms typical

Dimensions: 17" x 12.25" x 3.45" (4.06" with feet) (432 x 311mm x 292mm)

Shipping Dimensions: 23.5" x 16" x 7.5" (597 x 406 x 191mm)

Weight: 27lbs (12.2kg)

Shipping Weight: 28lbs (12.7kg)

Storage Temperature: -40° to +120° C

Working Temperature: -5° to +40° C