Kenwood - KA-907 Solid state integrated amplifier





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Description from the seller
Kenwood KA-907 – High Speed DC Integrated Amplifier (Flagship)
An icon from the golden age of hi-fi. This Kenwood KA-907 is not just an amplifier; it is a technical masterpiece and the absolute top model from Kenwood's renowned 'High Speed' series (circa 1979). This beast weighing almost 25 kg is known for its unprecedented speed, grip, and transparency.
Technical Nobility:
The KA-907 is built according to a strict Dual Mono principle with two massive transformers, ensuring perfect channel separation and a very stable power supply. Thanks to Kenwood's innovative 'High Speed' technology, the amplifier has an extremely high slew rate, resulting in a very dynamic and natural reproduction of transients (rapid sound spikes).
Features:
* Top-class phono section: For vinyl enthusiasts this unit features an extensive MM and MC phono stage with adjustable impedance.
* Build quality: A solid aluminum front panel, heavy milled knobs, and an interior built like a tank.
* Power: With 150 watts per channel into 8 ohms, this amplifier effortlessly drives even the most demanding loudspeakers.
Condition of the unit:
* Visual: some minor signs of use on the edge of the front, wear appropriate to age. See photos for an accurate impression.
* Technical: Recently serviced with bias adjusted and contacts cleaned.
TECHNICAL SPECIFICATIONS:
* Output power: 150 watts per channel into 8 ohms (stereo)
* Frequency response: DC to 400,000 Hz (+0dB, -3dB)
* Total Harmonic Distortion (THD): 0.01%
* Damping factor: 100
* Input sensitivity: 0.1 mV (MC), 2.5 mV (MM), 150 mV (line)
* Signal-to-noise ratio: 70 dB (MC), 90 dB (MM), 105 dB (line)
* Slew Rate: ± 230 V/µs
* Rise Time: 0.8 µs
* Dimensions: 460 x 161 x 463 mm
* Weight: 24.8 kg
* Production period: 1979 - 1981
SHIPPING & PACKAGING
Given the substantial weight of nearly 25 kg, this unit will be packaged with utmost care in a sturdy double box with ample protective material. Shipping is conducted via an insured courier service with Track & Trace. Pickup is of course also possible by arrangement.
Warranty:
The audio equipment we offer consists mostly of vintage gear that is 40 years old or older. Each unit is carefully checked by us, professionally cleaned, and thoroughly tested before being offered for sale.
Despite this careful inspection, it may happen that a defect occurs on receipt or after some time. Because of the age of the equipment, such malfunctions can arise unexpectedly and are beyond our control.
For this reason we cannot provide a warranty on vintage equipment. We understand this can be inconvenient and we believe it is important to be transparent and honest about it. Of course we do our utmost to deliver every unit in the best possible condition.
Kenwood KA-907 – High Speed DC Integrated Amplifier (Flagship)
An icon from the golden age of hi-fi. This Kenwood KA-907 is not just an amplifier; it is a technical masterpiece and the absolute top model from Kenwood's renowned 'High Speed' series (circa 1979). This beast weighing almost 25 kg is known for its unprecedented speed, grip, and transparency.
Technical Nobility:
The KA-907 is built according to a strict Dual Mono principle with two massive transformers, ensuring perfect channel separation and a very stable power supply. Thanks to Kenwood's innovative 'High Speed' technology, the amplifier has an extremely high slew rate, resulting in a very dynamic and natural reproduction of transients (rapid sound spikes).
Features:
* Top-class phono section: For vinyl enthusiasts this unit features an extensive MM and MC phono stage with adjustable impedance.
* Build quality: A solid aluminum front panel, heavy milled knobs, and an interior built like a tank.
* Power: With 150 watts per channel into 8 ohms, this amplifier effortlessly drives even the most demanding loudspeakers.
Condition of the unit:
* Visual: some minor signs of use on the edge of the front, wear appropriate to age. See photos for an accurate impression.
* Technical: Recently serviced with bias adjusted and contacts cleaned.
TECHNICAL SPECIFICATIONS:
* Output power: 150 watts per channel into 8 ohms (stereo)
* Frequency response: DC to 400,000 Hz (+0dB, -3dB)
* Total Harmonic Distortion (THD): 0.01%
* Damping factor: 100
* Input sensitivity: 0.1 mV (MC), 2.5 mV (MM), 150 mV (line)
* Signal-to-noise ratio: 70 dB (MC), 90 dB (MM), 105 dB (line)
* Slew Rate: ± 230 V/µs
* Rise Time: 0.8 µs
* Dimensions: 460 x 161 x 463 mm
* Weight: 24.8 kg
* Production period: 1979 - 1981
SHIPPING & PACKAGING
Given the substantial weight of nearly 25 kg, this unit will be packaged with utmost care in a sturdy double box with ample protective material. Shipping is conducted via an insured courier service with Track & Trace. Pickup is of course also possible by arrangement.
Warranty:
The audio equipment we offer consists mostly of vintage gear that is 40 years old or older. Each unit is carefully checked by us, professionally cleaned, and thoroughly tested before being offered for sale.
Despite this careful inspection, it may happen that a defect occurs on receipt or after some time. Because of the age of the equipment, such malfunctions can arise unexpectedly and are beyond our control.
For this reason we cannot provide a warranty on vintage equipment. We understand this can be inconvenient and we believe it is important to be transparent and honest about it. Of course we do our utmost to deliver every unit in the best possible condition.

