Gromit's music centre...

[Canetoad]

Hi Richard. Looks very nice. I'm enjoying the Sony N55ES power amp in my system at the moment too.

Have you received the (new) PL-71 yet?

[Gromit]

Thanks chaps.

Congrats ! By all accounts they are pure, neutral, effortless, unending power on tap.... IMO you have arrived at the point where you no longer need to think about amplifiers... Just sit back & enjoy

I'd like to think this could be the case James - would be good to get off the amplifier treadmill for a while. Saying that, I've had the 670ES for a year and never really felt the need for change (apart from the occasional 'I wonder if...' moments).

The 770ES is doing what the 670 does - it's clean, pure, neither seeming to add nor subtract anything. The 770 just does it more - the picture is bigger, bass isn't greater in quantity but it kicks harder - a lot harder. I'm using the little Q 2010i's at the moment before they become part of a second system in the family room (with the 670ES at the helm).

Playing a couple of tracks off the Dave Weckl 'Transition' album there are a few bass lines where Tom Kennedy plays deep, fast riffs in parallel fifths. On previous amps, the interval was there but on the 770 it's a good deal more obvious, and there's less lag into the bargain. There's greater interaction between sounds/insturments but in a natural way. And yowzas this thing has some grunt - it's like sticking a Hayabusa motor in a moped.

[brian2957]

Great stuff mate

[Gromit]

Hi Richard. Looks very nice. I'm enjoying the Sony N55ES power amp in my system at the moment too.

Have you received the (new) PL-71 yet?

Nice one Bernie - glad the Sony's working out well.

Hopefully getting the PL71 next thursday.

It's awake...



And in its new home - runs warm but seems to have enough breathing space above:

[RobHolt]

I'm liking the 'spontaneous twin drive' - presumably this means it responds in real time on two channels, aka a stereo amplifier

Looks a nice bit of kit though.

[Gromit]

I'm liking the 'spontaneous twin drive' - presumably this means it responds in real time on two channels, aka a stereo amplifier

Looks a nice bit of kit though.

Darn clever those Japanese chaps.

Actually I believe it's something to do with the power supply in that no matter how much draw there is on the power side of the amp, the pre-stage will always receive its quota of electrimutical thingies.

<spot the bloke who didn't do a degree in sparky things>

[hoopsontoast]

Good old amp isnt it

[Gromit]

Good old amp isnt it

It ain't too shabby, that's for sure.

[istari_knight]

Darn clever those Japanese chaps.

Actually I believe it's something to do with the power supply in that no matter how much draw there is on the power side of the amp, the pre-stage will always receive its quota of electrimutical thingies.

<spot the bloke who didn't do a degree in sparky things>

To quote Sony's marketing literature:

"A proprietary Sony amplifier power supply technology which employs separate voltage rails for the driver & output stages. This methods provides greater headroom and helps prevent clipping"

AFAIK most of the marketing terms for circuit designs are copyrighted as Accuphase had to purchase the license from Sony to use "Spontaneous Twin Drive" amongst other Sony "technologies" in the P-4100 which apparently is a race tuned Sony TA-N77ES.

As you say, clever chaps those Japanese but their marketing depts come up with some rubbish!

[julesd68]

The "Gibraltar" chassis is quite an extravagent moniker - is it really solid as a rock??