Audio Database

Image of R-803
Commentary

This is a stereo tuner amplifier that became a huge hit with 300000 units in Europe and America due to its high cost performance.

In order to ensure the freedom of sound quality design, the power amplifier section is composed of all discrete circuits without using power ICs, and sound quality measures developed by Integra are introduced.
A highly stable power amplifier has been realized by adopting a feedback type constant current amplifier stage for the power section input.

It uses a classified memory that can divide the desired FM/AM station into 6 groups A to F.
Up to 40 stations can be registered in each class, and overlapping stations are also possible.

It is equipped with an APR (Automatic Precision Reception) system that automatically switches between sensitivity (RF-DX/LOCAL) and stereo mode according to the radio wave condition of FM broadcasting, and performs optimum reception.

Equipped with an auto-search tuning function, it is possible to perform auto-tuning that automatically scans by pressing the UP/DOWN keys and temporarily stops when receiving a broadcast station.

It comes with a system remote control and can be operated in combination with C-303, K-W505, K-503R, etc.

Model Rating
Type FM/AM stereo tuner amplifier
Amplifier Unit
Rated output 50W + 50W (6 Ω)
43W + 43W (8 Ω)
Maximum practical power 80W + 80W (8 ohm, EIAJ)
Total harmonic distortion factor 0.08% (at CD, 1 kHz, rated output)
Signal-to-noise ratio CD and others : 100 dB
Frequency characteristic 2 Hz ~ 80 kHz + 0 -3dB
Phono maximum allowable input MM : 120 mv (1 kHz, 0.2%)
Tone control Bass : + / - 10 dB (100 Hz)
Treble : ± 10 dB (10 kHz)
Input source CD, Phono, FM, AM, Tape1, 2
Tuner Section
Receiving frequency FM : 76.0 MHz to 90.0 MHz
AM : 552 kHz to 1611 kHz
FM sensitivity 18.8 dBf (2.4 μ V, 75 Ω, S/N50dB)
SN ratio (FM) mono:82dB
stereo:76dB
Distortion Factor (FM) mono:0.1%
stereo:0.2%
Stereo separation FM:45dB(1kHz)
<General>
Pwer 100 VAC, 50Hz/60Hz
Power consumption (Electrical Appliance and Material Control Law) 120W
External dimensions Width 455x Height 120x Depth 316 mm
Weight 7.4kg
Attachment Remote control