Contract 270
270W Class AB Mixer Amplifier
Product at a Glance
The Contract 270 is a single-channel, 270W Class AB mixer amplifier purpose-built for medium-sized paging and background music systems. With multiple output configurations—supporting 100V, 70V, or low-Z (4Ω/8Ω) lines—it adapts effortlessly to a wide range of commercial audio installations. Inputs include priority mic, 2 mic, 2 aux, USB, and wireless options, with a built-in USB-A media input and TRS/Euroblock connectors for flexible integration.
Designed with ease-of-use in mind, the Contract 270 offers bass, treble, and master controls, along with LED output metering, dedicated volume knobs for each source, and a Vox switch for priority input. It features advanced protections including short circuit, DC output, and peak limiting, all housed in a durable white aluminum chassis with a brushed steel front panel. Perfect for schools, retail stores, hospitality, or paging systems, the Contract 270 delivers intelligent performance in a compact format.
CRAFTSMANSHIP
Painstakingly Perfect Production
Over the years, craftsmanship has been closely linked with small scale individualistic production. Back in 1972, we started the same way. As we grew in scale & size, it was difficult to build each speaker individually, but quality control was of utmost importance as so switching to a general assembly line was simply not an option. So we wrote up a code, one quite like enigma, to ensure quality control. We selected the right partners, got the right tools, and in cases where those weren't available, we invented them. We grew slower than most as our aim was to last longer than most.
TECHNICAL SPECIFICATIONS
OUTPUT POWER
• 1 Channel
• 150W/ Ch @ 8Ω
• 270W / Ch @ 4Ω
• 270W / Ch @ 2.7Ω
• 270W / Ch @ 100V
• 270W / Ch @ 70V
AMPLIFIER INPUTS
• 1 x Priority Mic Input
• 2 x Mic Inputs
• 2 x Aux Inputs
• 1 x USB Input
• 1 x Wireless Input
AMPLIFIER OUTPUT
• 1 x Direct Output for 100V/70 or Low-Z
CONNECTORS
• Euroblock Connectors for Direct & Signal
Outputs
• TRS Jack Connectors for Mic Inputs
• USB-A Type Media Input
SYSTEM
SPECIFICATIONS
• Input CMRR > 60 dB
• Freq. resp.: 20Hz - 20kHz ±3dB
• THD : better than 0.1% (1 kHz)
• THD : better than 0.21% (FR)
• Nominal system gain: 27 dB
• Input Impedance — 20kΩ
• Signal Limiters Present
• Protection Against Short Cicrcuit & DC
Outputs Peak Limiting
• Mains In-rush Control prese
CONTROLS &
MONITORING
• Bass, Treble & Master Controls
• LED Strip for Output Metering
• 3 x Mic, 2 x Aux & 1 x Media Volume
Control Knobs
• Media Selection & Playback Controls
• Vox Switch for Priority Input
POWER CONSUMPTION
• 1A Power Consumption, Nominal @ 240V,
4 Ohms
• 2A Power Consumption, Nominal @ 120V, 4
Ohms
• See Power Consumption & Thermal
Emission Chart for a detailed specificati
OPERATING PARAMETERS
• Operating positions : To be used in a
rack-mount case with no front to back airflow
restriction
• Maximum permitted ambient temperature
(Ta max) 45° C (113° F)
• Minimum permitted ambient temperature
(Ta min): 0° C (32° F)
• 32 dB Fan Noise
AESTHETIC SPECIFICATIONS
• White Aluminum Chassis
• Matte Star Silver Front Pane
SIZE
• Product : 88 x 482 x 458 mm (H x W x D)
• Product : 3.4 x 19 x 18 inch (H x W x D)
• Packed individually
WEIGHT
• Net : 11 Kgs
• Net : 24.2 Lbs
SHIPPING INFORMATION
• Carton Size
163 x 556 x 533 mm (H x W x D)
6 x 22 x 21 inch (H x W x D)
• Gross Weight : 13 Kgs / 28.7 Lbs
• Packed : Individually
DOWNLOADS CENTRE
Datasheet
