List of PWM Amplifiers. - Page 10

I think any receiver that has digital input can serve your need. It doesn't have to be PWM/class D/digital amp. Class A/B (analog) Amp converts digital signal to analog before amplifies it. Class D (digital/PWM) amp amplifies digital signal without conversion. Anyone can correct me.

I don't have much money to own very expensive euipments like your guys and have no golden ears to tell which one is better.

I am thinking of buying Pana XR57.
How does this compare to HK DPR 2005, and the other PWM amps?

Biology is very different from EE in coursework structure. In EE, we don't do much of blind test bcoz it still have bias from the people who take the test. We try to do tests without human bias as much as possible. I have BS in EE, MS in Eng Mgt, PhD in IE, and used to lecture some EE class, so I know something about EE.

A new relatively inexpensive ICEpower based mono amp:
http://www.audiocircle.com/circles/i...?topic=30208.0

Hello All:

I think I've read this thread quite thoroughly, but I didn't actually notice a digital amp with a digital (SPDIF) input. Is there such a beast?

I know there are receivers (eg Panasonic) which will be my fall-back position but that does seem overkill when all I need is a power amp (actually several) with digital in and analog out.

It looked like the Flying Mole multichannel jobbie might be the answer, but again it's analog in.

Thanks.

Tact audio has all digital amps.

Take a look at the PCM->PWM amps like anything using TI's Equibit technology, like the amps from TacT Audio . Otherwise, I think you will need to find an amp with a DAC (kind of like your receiver). You might also be interested in the new products from Amplio Audio. It looks like they are including the soundcard/DACs with their amplifier. Of course you wouldn't need a S/PDIF cable, instead you would connect directly to your PC with FireWire, just like many external soundcards.

Yes, have a look at TacT Boz: http://www.bozaudio.com

The "problem" with a digital input is that you'll need volume control (unless you want to do the volume control in the digital domain, which might not be ideal).

The TacT amps use an RS-232 link for syncronizing the volume between the preamplifier and the power amplifier.

BTW, the Tact amps use a very interesting technique of volume control. The digital input is always at full level, and the volume is controlled by controlling the voltage of the amp's power supply...

Peter

Curtis et al,

Kevin at DIYCable.com has released his astoundingly-priced Hypex-based Exodus kits, which he will also assemble for a fee. I'm ordering a 5-channel UcD400-based kit today, and I will keep everyone posted. My first impressions are of clean and overbuilt parts, great instructions and layout, and shiny case.



This qualifies as an exciting addition to the Class D amplifer list, so thought I'd add it here.

This amp will be mated to my Ascend 5-channel setup.
I will keep all interested apprised of my kit build progress, likely in another thread.

Interesting mini-review here with this author stating that the amp supersedes his existing Odyssey Stratos, which I think is no small achievement.

Best,
Adam

Looking forward to it Adam! After you are done building, you are bringing the amp out to LA so we can compare...right?

You're still missing the new NHT ICE amps -

http://nhthifi.com/2006/products/s/power2.html
http://nhthifi.com/2006/products/s/power5.html

200Wx2 - $1200
200Wx5 - $2000

John, can you find out from NHT which module they are using?

I did. It's marked on the board itself. The one I posted in the other thread. It was something like xxx500A. It is the current generation of the 200W module without the power supply (they build their own).

Thanks John...great stuff...great pricing.

Coming from you, that makes me feel much better! I was a bit worried about the prices and I've never heard an ICE amp before, so you get those fears about what it might sound like. I still am waiting to get one for myself (the line is long still!), but from what I've read, I'm feeling better about it. Of course, the Xd system is running digital amps and I have little to complain about there. I'm all for amplifiers that are cooler and more reliable, especially for receivers and custom install product! I suspect there will be quite a bit of additions to be made to these page in less than a month from CEDIA members.

In a post over on diyAudio, they mentioned a new Class-D chip manufacturer named Freescale who might be collaborating with Apple on future amplifier products.

Has anyone else heard anything about this...?

I'm curious.

Freescale used to be Motorola, right?

A one-stop Jonathan Ive designed box with solid room correction, OSX, and efficient (preferably configurable, to allow multiamped systems with active crossovers) amplifiers is nothing less than the end of the entire rest of the audio industry. Let's hope it actually happens.

Yes, Freescale is a Motorola spinoff.

As far as the end of the rest of the audio industry... I hope not. We're just trying to get started.

Only whispers. Since they have very high-end conventional amps in the M3 and M25 amplifier (and rumors of more additions in this area), I would make a bet that the digital amps would show up in, perhaps, a 7.1 Masters Series receiver. Digital amplification would be critical because you couldn't get the kind of power that one would expect from a Masters series component in a receiver without going digital. I'm speculating mostly, but I think that's what is likely to happen.

They will probably leverage what they can out of their ICEpower agreement.

That would NHT doing ICE, but that could very easily happen as well. NAD is dealing with TI on surround processing so they might be doing a tri-path thing

Sorry...I got mixed up between NHT and NAD.

Doh!!! I just pulled a Curtis

But seriously, I have no idea what NAD is using, it could be totally proprietary. I just heard bits and pieces. I'll probably be able to find out at the CEDIA show on Saturday.

I thought NHT was using PowerPhysics. At least that's what they use in their XdA (which is part of their Xd system).

Yeah...but in their new standalone power amp they are using ICEpower.