Kyocera R-861

If receivers have something of a bad reputation among serious audiophiles, there's a good reason, in Japan, where everybody owns compnent high fidelity, nobody owns one-piece receivers. In fact, North America may be the only place where receivers represent a majority of the market.

For most Japanese audio engineers, receivers are strictly for export. They're not serious components at all. So receivers are designed by the second-string engineers. This explains why even companies with decent separates tend to load their receivers up with meaningless knobs, buttons, and displays.

The irony here is that  there's no reason why receivers must be second-class components. There's nothing to prevent a company from using the same common sense and judgement in receiver design as they exercise with separates. This is the guiding philosophy behind Kyocera receivers.

 MOS FETS in the Driver Stage

A rarity in receivers, Metal-Oxide-Semiconductor Field Effect Transistors (MOS FETs) are used in the driver stages of all Kyocera receivers for their superior transient response and isolation characteristics.

Pre-Out/Main-In jacks

While it is hard to find a receiver with pre-amp output/ main-amp input jacks nowadays,, all Kyocera receivers have them. So you can connect outboard signal receiver as part of an elaborate multi-amp system. That's particularly important considering the multi-room capability of the Kyocera Full-System Remote Control network.

 The Kyocera R-861

Features

100 watts per channel (continous RMS both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,02% Total Harmonic Distortion

Compatible with Kyocera Full System Remote Control network

Manual/electronic volume control

Parametric bass, midrange and treble controls

Subsonic filter at 20 Hz with 12 dB/octave slope

High filter

Two tapemonitors with dubbing

Pre-amp Output/Main-amp Input jacks

MOS FETs in the amplifier driver stage for better dynamic performance

Toroidal transformer

Low-feedback design for reduced transient intermodulation distortion

Oxygen-Free Copper (OFC) wiring fo reduced noise

Moving Magnet/Moving Coil phono input stage

Female banana jacks bypass speaker switching for straight-wire-with-gain circuit

Quartz frequency synthesis tuning

FM front end with MOS FETs and High-Q varicaps for minimum interference

Ceramic IF filters for high selectivity, low distortion

Automated  IF bandwidth switching (Wide/Narrow) adapts to your reception conditions

High-frequency FM comparator for reduced noise

FM quadrature detector for low distortion

Switchable de-emphasis for Dolby FM broadcasts

Chopper type FM stereo demodulator for improved stereo separation

High blend switch for better sound on weck FM stations

7AM + 7 FM station presets

Specifications

Power Output RMS (both ch. Driven into 8 Ω with no more than 0,02% T.H.D., 20 Hz - 20 kHz):  100 W/ch

Dynamic Short-Term Power (at 1 kHz):

120 W/ channel at 8 Ω

180 W / channel at 4 Ω

230 W/ channel at 2 Ω

Total Harmonic Distortion (at rated power):  0,02%

Power Bandwidth (-3 dB re rated power):  10 Hz - 60 kHz

Intermodulation Distortion (at rated output,SMPTE):  0,02%

Slew Rate:  50 V/usec

Rise Time:  1,0 usec

Dynamic Headroom , 8 Ω :  1,0 dB

Input Sensitivity/Impedance:

Phono MC  :  125 µV/100 Ω

Phono MM  :  2,5 mV/47 k Ω/100 pF

Others :  150 mV/30 k Ω

Phono Input Overload  1 kHz, 0,5% T.H.D.:

phonoMC :  8 mV

PhonoMM :  150 mV

Signal-to-Noise Ratio (IHF short circuited, A-weighted, rated output):

Phono MC :  68 dB

Phono MM :  88 dB

Others :  100 dB

Turnover Frequencies:

Bass Control :  100 - 500 Hz

Midrange Control :  0,5 - 2,0 kHz

Trable Control :  2 - 10 kHz

High Filter (6 dB/oct) at 10 kHz :  -6 dB

Subsonic Filter (12 dB/oct) aat 188 Hz :  -3 dB

FM Usable Sensitivity (mono):  9,8 dBf

FM 50 dB Quieting Sensitivity

Mono :  14,8 dBf

Stereo :  35,8 dBf

FM Capture Ratio (Normal IF):  1,0 dB

FM Distortion, 1 kHz, Normaal IF

Mono :  0,06%

Stereo :  0,07%

FM Stereo Separation, Normal IF, 1 kHz:  58 dB

FM Frequency Response (30 Hz - 15 kHz):  +0 dB/-0,5 dB

FM Signal-to-Noise  Ratio, A -weighted

Mono :  82 dB

Stereo :  76 dB

FM Alternate Channel Selectivity:

Normal IF :  40 dB

Narrow IF :  81 dB

FM Spurious Rejction:  95 dB

FM IF Rejection:  120 dB

FM Image Rejection:  85 dB

FM Subcarrier product Ratio:  65 dB

Power Consumption:  320 W

Dimensions (W x H x D):  460 x 132 x 360 mm (18-1/8" x 5-3/16" x 14-3/16")

Weight:  12,3 kg (27 lbs)