ONKYO Integra 225

Commentary

This receiver has been developed with an emphasis on sound quality. For example, the main amplifier section is directly connected to all stages and the FM-MPX circuit is a monolithic IC.

The tuner section is designed with 4-row varicon, and the IF section is designed with 6-element mechanical filter, 4-stage limiter including differential amplifier, etc.

The amplifier section takes advantage of the Integra701 technology and uses a direct-coupled differential amplifier circuit for all stages.

Model Rating

Type	All stages directly connected stereo receiver
Power Amplifier Unit
Rated output (at THD 0.1%)	22W+22W
Dynamic Power	70W
Distortion Factor (1 kHz, Rated Output)	0.3% or less
Frequency characteristic	15 Hz to 30 kHz, 0 -1dB
Power Band With (IHF)	20 Hz to 30 kHz
Damping factor	100
Signal-to-noise ratio (IHF A network)	100 dB or more
Load impedance	4 Ω ~ 16 Ω
Preamplifier Section
Distortion Factor (1 kHz, 1 V Output)	Not more than 0.1%
RIAA deviation (20 Hz to 15 kHz)	Within ± 0.5 dB
Equalizer Allowable Input (1 kHz)	140mV
Signal-to-noise ratio (IHF-A)	Phono1, 2 : 70 dB or more AUX, Tuner : 85 dB or more
Input Sensitivity / Impedance (1 kHz)	Phono1, 2 : 2mV/50k Ω AUX : 100mV/100k Ω Tuner, Tape moni : 100mV/100k Ω
Tone control Turnover Frequency	Bass:+14 -18dB(20Hz) Treble:+11 -14dB(20kHz)
Tuner Section
Receiving frequency	FM : 76 MHz to 90 MHz AM : 530 Hz to 1605 kHz
Sensitivity (IHF)	FM : 2 μ V AM : 40 μ V
Image ratio	FM:70dB(83MHz) AM:40dB(1MHz)
IF interference ratio	FM:100dB(83MHz) AM:40dB(1MHz)
Signal-to-noise ratio (FM-IHF)	65dB
ACA (2-signal selectivity)	65 dB or more
AM suppression ratio	FM : 50 dB or more
Capture ratio	FM : 1.5 dB or less
FM stereo distortion factor	Not more than 0.5%
FM-ST Separation (400 Hz)	38 dB or more
Frequency characteristic	20 Hz to 15000 Hz, + 0 -1dB
<General>
External dimensions	Width 437x Height 136x Depth 345 mm
Weight	10kg