Comprar Marantz SR6015 nuevo o Marantz SR7012 de segunda mano
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Re: Comprar Marantz SR6015 nuevo o Marantz SR7012 de segunda mano

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DarkenedUnderpass
Es un poco simplista esa afirmacion de ASR. Los Marantz suenan distinto que los Denon porque de sonar igual, no tendria sentido tener dos marcas. Los módulos HDAM de Marantz, mejoran el apartado musical respecto a Denon, pero empeoran (por lo visto) el SINAD
Tengo la impresión que no viste estos comentarios en la prueba que cité:
You can see signs of the amplifier getting unhappy with very high harmonic distortion content. I put the unit in Pre-amp mode (in Amp Assign submenu) and these were the results:
While we get a 5 dB improvement in noise and distortion, the SINAD which represents both is still a very disappointing 80 dB. This drops the SR7105 in the bucket of "poor" performance with respect to AVRs and DACs tested:
Denons using similar architecture are far better and indeed class leading in my measurements as you see above.
We see that the optimal output level is around 0.7 volts which is quite low. If you are buying an external amplifier make sure its sensitive is no higher than 0.7 dB or you will suffer from degradation of the internal DAC and buffer stage in SR7015.
Notice how having the amp on and off makes little difference until you approach 2 volts. The degradation is a function of the buffer/gain stage of the unit. I have indicated the volume level where this degradation occurs (73). So if you are at or below that, you would get significantly better performance (approaching CD's 16 bit dynamic range).
The consequence of this is that if we allow wider bandwidth for the test, THD+N/SINAD suffer greatly compared to the dashboard which uses the audible band:
We see the usual harmonic distortions at multiples of 10 kHz but also very tall spikes at the 10±44.1 kHz as indicated. You won't hear these fortunately but technically it is is not nice to have them.
Another disappointing area is jitter:
We tend to think "bits are bits" but clearly the analog output of the unit is impacted depending on which digital source we use: HDMI and Coax. Each has their own induced jitter components which shows lack of design hygiene in producing a clean clock/reference voltage. Fortunately once again audibility is not a problem as levels are quite low.
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