Car amplifiers are the heart of a system and need be of the best quality available for your budget. All In Phase IPA car amplifiers are hand assembled and go through 35 different check points to ensure you get the best possible car amplifier today. With FOUR and TWO OHM stable designs, tri-mode capability and clever protection circuits, these hand-built powerhouses will take anything you throw at them. It doesn't matter if you are using That's only just the MONO Channel which is dedicated for subwoofers.The newly British designed IPA9705D is a real car audio enthusiast's amplifier. The full range channels provide superb technical performance, unsurpassed sound quality, and an exceptionally accurate and dynamic rendition of all types of music. Whether you are a Jazz listener or a drum and bass listener, this amplifier will maintain a smooth transition through the music spectrum ensuring your music stays true to the original recording. This realism puts you centre stage and enhances your listening experience to breath taking levels.The IPA series amplifiers are designed for high performance in an aftermarket setup. So there is no speaker level input. But you do not need to panic, you can use a line out converter to fit this amplifier to your factory system. For fitting the IPA series amp to a factory system we advise using the In Phase SRC6.British DesignAll In Phase amps are designed in the UK utilising over 30 years of audio experience to create a sound that is right for you.Improved Circuit DesignTo prevent circuit shutdown, In Phase's new digital amplifier circuit, senses its internal temperature and automatically moderates input level accordingly. Stable, durable circuitry lessens the risk of high input power for the unit to achieve 1 Ω connection on the Monoblock IPA Amp and 2Ω for the 4 channel IPA Amps. This design enhances the flexibility to connect multiple subwoofers to a system.Variable Low Pass FilterFor extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. The LPF is adjustable from 50 Hz to 250 Hz.Small FootprintThe IPA series amps are not massive slabs of metal/plastic. They are compactly designed ensuring easy fitting.True RMS PowerThe In Phase IPA9705D amplifier goes through numerous check points to ensure you get the true performance you are paying for. Even comes with a handwritten certificate certifying the powerStealth DesignAlong with the slim design, the blackout design of these amplifiers ensure this amp camouflages into your boot, the intimidating LED blue lights in a blackout area, will give your system that evil look.FIVE ChannelsWith FOUR full range channels and ONE mono channel, you will be able to set a front and rear speaker system as well as a powerful subwoofer. Product Features: Class 'D' FULL RANGE High-Current Dual Discrete Drive Stages. Class 'D' FULL RANGE Technology MOSFET PWM Power Supply Bridgeable & TRI-Mode Operation Continuously Variable 12dB/Octave High Pass 12dB & 24dB / Octave Low Pass Crossover Subwoofer Variable Crossover for Deep Bass Control Enhanced Bass Boost +12dB @50Hz Silver Plated RCA, Power & Speaker Terminal Soft Start & Muting Overload, Thermal and Short Circuit Protection Power & Protection Indicator Specifications Power Source 14.4DC (10V to 16V) Grounding System Negative Type Current Consumption 103A (at continuous power: 4 Ω 173A (at continuous power: 2 Ω Average Current Consumption 1.4A (4Ω for four + one channel) 1.5A (2Ω for four + one channel) Fuse N/A Weight 5.0kg (11lbs excluding cables) Maximum Power Output 240W x 4 + 1200W x1 (4Ω) 400W x 4 + 2000W x1 (2Ω) 800W x 2 (4Ω) + 2000W x1 (2Ω) Continuous Power Output 120W x 4 + 600W x1 (at 14.4V. 4Ω 20Hz to 20kHz