The Onkyo Integra 234 is a stereo receiver that was manufactured between 1971 and 1973. It integrates the pre-main amplifier and tuner components, providing a compact solution for audio enthusiasts. Featuring a pure direct connection circuit design, this model delivers a rated output of 11W into 8 Ω at 1 kHz with a dynamic power output of 40W, maintaining total harmonic distortion of 0.3% or less at rated output. The frequency response ranges from 20 Hz to 25 kHz, with a power bandwidth of 25 Hz to 25 kHz at -3dB. The signal-to-noise ratio exceeds 100 dB, while the damping factor is rated at 30 across a frequency range from DC to 20 kHz. The preamplifier section offers input sensitivity of 2.5mV for phono and 200mV for AUX inputs, with a maximum allowable input of 90mV for MM cartridges. The RIAA deviation is within ±0.5 dB from 30 Hz to 15 kHz. The tuner section supports FM frequencies from 76 MHz to 90 MHz and AM frequencies from 530 kHz to 1,605 kHz, with an FM sensitivity of 2.5 μV and an AM sensitivity of 40 μV. It provides a stereo separation of 33 dB at 400 Hz and ensures a frequency response for FM signals from 20 Hz to 15 kHz. The external dimensions of the unit are 437 mm in width, 136 mm in height, and 355 mm in depth, weighing approximately 8 kg.
