Noise Ratio:> 110 dB (high end)
Sound distortion: Loudness Correction: because I hear mostly quiet and have a human ear nichlineares
Power consumption (quietly): In addition to the analog and optical digital inputs (D-> A converter: 120 dB, 0.001% THD)
Cost: in the range of approximately 1000 EUR
Stereo: for operation with two slender columns attractive quality, but not for a forest of loudspeakers
And how do I get these requests to buy this amp and evaluate him very well?
The search for a matching amplifier began frustrating because decades after the introduction of digital audio sources, the stereo amplifier still not by default have optical digital inputs. The expensive amplifiers also have loudness correction and consume unabashedly at soft music more than 80 watts. The cheaper amp you get usually with a loudness correction in return you get often a stronger sound distortion.
After this result, I decided to look for an analog amplifier and to a separate DAC. New on the market are two interesting DA converter: Musical Fidelity V90-DAC and NAD D 1050. Both meet the sound requirements. The decision on whether this converter are oversized or if another DAC better meets my needs, is still pending.
On the basis of manufacturer's specifications and reviews I have found some amplifiers that meet most requirements. Power consumption at low volume, I could not determine in this way. To obtain the power consumption, I have written four manufacturers via email. Denon and Yamaha have sent me the requested information with an email. Denon PMA 720 has the lower consumption.
Then I bought the Denon PMA 720 and tested with high quality boxes. The Denon I also compared to many years used amplifiers from Yamaha and Pioneer - with the result:
The sound is pure.
Fully up volume control and input is open, the noise can be heard only 10 cm in front of the tweeter.
The loudness correction enables a high-quality listening at low volumes.
Power consumption is also low at low volume.
The mechanical properties, which led to the devaluation in the review of 13 December 2013 not worsen my vote, because the controls are not high-priced, but work exactly and look attractive.
In detail:
The speaker terminals are functional and wiggle only until the cables are firmly clamped.
The knobs are made of plastic and work accurately.
The switches are made of plastic. Four switches are on the small side and have in the guide approximately 1 mm play. The on / off switch is sufficiently large. All switches operate exactly.
The appearance is attractive. However, the haptic impression is not a high price, because the switches are too small and the controls to have little mass (slightly touch) and thus there is no impression of stability. Pleasant is that the controls do not feel cold.
Volume can use the remote control in about 8 seconds of the position "min" are regulated to the "max" when the volume button is pressed on the remote control permanently. I have the input level is set so that I can use the entire angular range then the control rate is appropriate.
The remote control affects quality, it enables volume control, mute and input selection and I do not need.
Conclusion:
For the price a very good amplifier - the evaluation focus sound quality.
The properties meet my needs, because the amplifier is connected through a DAC to a Vu + Solo2, the volume is adjusted with the remote control of Solo2 and I therefore seldom need the control elements of the Denon.
If Denon charge high price controls would have built 100 EUR, I would have preferred bought this version.
If Denon charge and optical digital inputs would have built on the quality of Fidelity V90-DAC 150 EUR, I would have found an optimal amplifier for me and bought it.
I wonder if my use of the Denon is outside the mainstream, manufacturers are likely with "yes!" answer - and how it looks with consumers?
