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Peachtree iDecco - Conclusion

Article Index
Peachtree iDecco
Sound quality
Conclusion
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CONCLUSION
A very interesting product, this. The Peachtree Audio iDecco is a great purchase for those heavily into digital, but with little space in their houses or listening rooms. Its built-in DAC is good enough to mix it with anything at the price, and the amplifier is highly effective too. Factor in a direct digital idecco_valveiPod dock, plus several other audiophile friendly facilities like a decent headphone section, and it makes a very convincing case for itself. Instead of an attractive style system that’s a little light on audiophile engineering, think of this more as a serious grown up DAC and integrated amplifier that’s been magically shrunk into a lifestyle box. As such, it gets the Hi-Fi World thumbs aloft!

 

 

 

 

 

 

 

verdict five globes

 

PEACHTREE AUDIO iDECCO £999.99
Computers Unlimited
+44(0)208 200 8282
www.unlimited.com

FOR

- direct digital iPod dock
- refined, detailed DAC
- smooth, open amplifier
- switchable tube buffer
- design, build, engineering

AGAINST
- nothing at the price



MEASURED PERFORMANCE

The iDecco produced 45 Watts into 8 Ohms and 64 Watts into 4 Ohms, enough power to drive reasonably sensitive loudspeakers, like 87dB large standmounters, loud. Small shelf mounters of 84dB will go loud, but not very loud.


The output stage had an unusual negative damping factor, where output voltage goes up instead of down when faced with a lower load, not unknown but never felt to be especially beneficial. Unfortunately, output conditions were not too well controlled; at very high frequencies response varied until slew rate limiting set in, not ideal. The open loop gain has not been curtailed at high frequencies in the chip amp used, as it needs to be. The amp was trying to work at 300kHz.


Sensitivity via the Aux input is very low at 750mV, good enough for CD players and tuners, but not most Phono stages.
Distortion was close to zero even at high frequencies, with the valve switched out, but that is what FETs with wide open loop gain plus a lot of feedback can do. The valve added just a little second harmonic, 0.04%.


The input DAC performed very well. It was unusually linear, so distortion was low, measuring just 0.14% at -60dB, a fine result. Frequency response was flat except with the filter engaged, and then it reached 17kHz our analysis shows, a well judged facility that will take the edge of much digital. Jitter injected via the optical input barely appeared on the amplifier’s output, whether the Jitter filter was switched in or out, so re-clocking looks solid.
The Peachtree will work well, but its excessive bandwidth may pass interference in 'noisy' locations; hi-fi amps do not work up to 300kHz or more. Otherwise the iDecco measured very well all round.
NK

Power    45 Watts
CD/tuner/aux.
Frequency response    50Hz-300kHz
Separation    72dB
Noise    -98dB
Distortion    0.04%
Sensitivity    750mV


FREQUENCY RESPONSE

idecco_fr1_filter



 

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