Denon POA-A1HDCI User Manual download pdf (Page 6)

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Denon POA-A1HDCI Frequency Response at 1 watt & Full Power

Power Bandwidth & Distortion

The POA-A1HDCI displayed excellent

frequencyresponseuniformitywitharuler

flat response in the audio passband and an

unwavering-3dBpointof108kHzatevery

power level whether in normal or bridged

modes of operation.

I measured full bandwidth continuous

power vs distortion by setting up a

regulated sweep in my Audio Precision to

automatically adjust input level until the

maximum power output was achieved at

< 0.1%THD + N.The POA-A1HDCIwas

plugged directly into an APC S-20 Power

Conditioner with regulation to ensure the

lineneverdroppedbelow116Vrms.

Power output: <0.1% THD + N

1CH, 8-ohms: 184wpc

2CH, 8-ohms: 180wpc

1CH, 4-ohms: 300wpc

2CH, 4-ohms: 285wpc

1CH, 8-ohms bridged: 340wpc

1CH, 4-ohms bridged: *425wpc;

500wpc @ < 1%

2CH 8-ohms bridged: 330wpc

2CH, 4-ohms bridged: *405wpc;

470wpc @ < 1%

drawn into the immense sound field that

Track #1 “Barcarole” was portraying and

Pat’s synth guitar was simply surreal. This

got my endorphins pumping as I couldn’t

wait to really crank out my favorite track

ofthediscwhichquicklyfollowed.Track#2

“Are You Going with Me?” starts out calm

and collected until Pat’s synth guitar erupts

into a solo so few guitarists can convey this

level of emotion in their playing. I found

myself continually cranking it up because

it was so clean and non-fatiguing. A sign

of a good system is when it’s blasting and

it doesn’t seem all that loud. The Denon

POA-A1HDCI was certainly reaffirming this

point with me.

DTS CD:

Diana Krall -

Love Scenes

Track #2 “Peel

Me a Grape” had

Diana’s vocals

centered straight

ahead while the

bass rattled my

floor joists. I was in awe that despite my

room was shaking with so much tactile

energy, I still heard all of the great reverb

from the surround channels in the recording

and the twang sound of the bass. There was

excellent separation of musical instruments

and no sigh of strain or smearing like I’ve

heard on lesser designed amplifiers. In

track #3 “I Don’t Know Enough About

You” I actually did hear distortion but

quicklyrealizeditwaspartoftherecording

likely caused by preamp clipping during the

recording process. My system was revealing

enough to showcase this recording flaw.

Measurements & Analysis

The gain structure for this amp is right

in line with every THX Ultra2 certified

product I’ve measured:

Av=23dBbalanced

Av=29dBunbalanced

Denon POA-A1HDCI Power vs Distortion

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