Integra DTR-70.4 is analogous to Onkyo TX-NR3010 and Onkyo TX-NR5010 receivers, but it’s superior to those! It’s great virtue, in my opinion, is the availability of trigger outlets and gilded connectors in the back panel, which Onkyo TX-NR3010 does not have.

Integra DTR-70.4 came into the market in 2013. In terms of functionality, it is very much alike the previous Onkyo / Integra range. The possibility of simultaneous operation of frontal and width channels was introduced, for which purpose one PCM1796 D-to-A converter was added. As regards the sound, the circuitry remained unchanged. That is why upgrades described in the article on Integra DHC-80.3 / Onkyo PR-SC5509 are also applicable to Integra DTR-70.4.


But I moved a little further. Since there were no processors in the new range, I decided to transform this receiver into a processor – the only difference being that the receiver will have no balance outputs, which I believe are not that necessary.

Integra DTR-70.4 distinguishes itself from Integra DHC-80.3 processor not only by availability of an amplifier in the device, but also by a simpler power unit for low-current preamplifier analog circuits, and an enormous mains transformer (which by the way issues much background noise) that supplies both the preamplifier and the power amplifier. This is quite audible. Although the processor and receiver have the same circuitry of the analog part, the processor sounds better. The receiver sounded somewhat impure.


What was done:

1. Multichannel power amplifier was removed. 2. Power unit was remade to resemble that of Integra DHC-80.3 – actually, the result came out even a bit better. 3. Big E-type transformer was replaced by 2 R-core transformers. 4. D-to-A converter and preamplifier board remade.

Trigger outlets are very convenient – there is no need to manually switch on the power amplifier.


As a result, the device sounds very nice and is just as good as Integra DHC-80.3 in terms of sound and measurement. In a manner of speaking, this device is unique.

Автор: Шейхов Тимур