class d

After recently purchasing a New (Very Old) Stock Audio Research amp from a store and noting how I subjectively liked it in comparison with my existing amp (March Audio P502 Hypex), I thought I would take some comparative measurements at the listening position to look for any differences...

Hi amigos I am selling a pair of a brand new Hypex NC500MP modules. I offer the cables set. Shipping to Europe only. 460€ paired. no need to introduce the NC500MP anymore, it's a safe bet for DIY or building a good little amp without breaking the bank) SPEC : Hypex NCore NC500MP X2 PSU...

Hello, I'm curious about this product. There are no reviews. Octavio is like a French copycat of Bluesound. They made a first splash with their Octavio Stream (200€), a streaming DAC with only one AUX input and no digital outputs. Octavio uses Octavio Virtuose for streaming. It looks...

So from reading around the SMSL A100 seems a good bet but have come across a lot of other options but could not find full reviews of them here so wondered if the A100 was what people recommend. I will be using them with Q Acoustic 3020i speakers. A lot of the time I will be using a computer to...

New module announced by ICEpower, with integrated buffer and SMPS for 588 usd. 2 x 1000W or 1 x 2000W, 5W SINAD 98 excellent (4 ohms, 1% THD+N). https://icepoweraudio.com/buy/as-series/2000as2hv/ Still not tamed the highs though like Hypex NCore(x) and Purifi Eigentakt did.

Nice. "The first new module with NCOREx implemented is the NCx500 OEM, and can be used as a drop-in replacement for the existing NC500 OEM module." https://audioxpress.com/news/hypex-announces-new-and-improved-ncorex-class-d-amplifier-technology

Hello highly distinguished, educated and kind humans, My name is LilSizzle and I want to buy an amp. Here is the story: I've moved into solo living for the first time in years, in the middle of the forest, and I want to some killer sound for my dance practice and watching movies. Killer as in...

I'm m looking for persons who have purchased the Purifi EVAL1 EIGENTAKT based systems and any build mods. I'm looking for a Canadian Supplier with track record. I live in Canada and have only found VTV so far. I'm planning on using a VTV Purifi type amplifier as a front left and right Channel...

Hypex UcD180HG HxR module analysis and review After buying and testing AIYIMA A07 amplifier (based on TPA3255 class D chip) in January 2021 I was quite disappointed with the frequency response modulated by speaker complex impedance and its audible consequences. This is, unfortunately...

Following the assumptions on possible influence of ultrasonic noise and carrier frequency residuals to tweeter output I have prepared an experiment where the tweeter is driven by 2.82V sine tone of 6kHz from 2 different amplifiers. One of the is AIYIMA A07, see my review...

Just received this beauty today! I am very happy! :) Based on Hypex NCore MP modules and Modushop case just like I wanted. 2 x NC502MP + 1 x NC252MP = 4 x 500W + 2 x 250W in 4 ohms. @Apollon Audio congrats on another beautiful amplifier. http://www.apollonaudio.com/

Hifi News has a review of this very expensive class D with some measurements. Seems to use an Infineon Merus driver with the GanFETs output switchers in a tube bottle. Good power but doesn't seem state of the art in measurements, but interesting with slow rise in distortion with both power...

SOLD SOLD SOLD SOLD SOLD NO LONGER AVAILABLE ******************* I am selling a Nord Three 1ET400A Dual Mono Stereo Amplifier. The Nord Three SE 1ET400A Dual Mono Stereo Amp is a nicely built amplifier using the Purifi class D amplifier technology. It uses the Nord Rev D buffers with on board...

For sale is the powerhouse of Hypex nCore, the NC1200 stereo amp built by VTV in the USA. asking $1000. It’s has all the clean power you need for even the most demanding speakers. 400W @ 8ohm 700W @ 4ohm 1200W @ 2ohm This has a 12v trigger option. This unit does NOT have the pin1 issue that you...

Hi folks, greetings from Berlin! due to a pretty big upgrade in my hifi system I came to occupy myself with looking for a fitting power amp. The speakers are Nubert NuVero 170 which are said to be very power hungry with 85db/1W and mercilessly monitor like (they are). I was powering them with a...

Good day, I'm looking for a new amp and am seriously considering the new breed of Class Ds such as Hypex NCore, ICEPower ICEedge, and the seeming unique Starke Sound AD4.320 with NS600 Class D amp mods. Starke makes some interesting claims that made me wonder on the effect of the power supply...

Finally ICEpower is expanding the use of its ICEedge chip to other modules other than the 1200AS. They went with separate amplifier boards (300A2, 400A2) and a separate power supply (1500S). Still the 400A2 distortion is kind of disappointing. 300A2 Features: 2 channel 300 W @ 1 % THD+N, 20...

I'm trying to put together a linear power supply for a TPA3255 board. I ordered a transformer from a company who shall remain nameless. It's 500VA and 34V transformer. They have two at these specs. One simply has 2x outputs at 7.4A (according to their specs). The other one has 2x 34V at 5.8A, 2x...

This topic is dedicated to Frequently Asked Questions about class D amplifiers. If you have been directed here the reason is that it is easier to concentrate the frequent answers here instead of repeating them in several topics. Q1: Class D power ratings cannot be true. How can these small and...

I was curious if inserting AIYIMA A07 TPA3255 class D amplifier in the D/A – A/D loop would be audible. I tested the amp in another thread and found that the frequency response depends, at higher frequencies, on speaker complex impedance, due to amplifier's output LC filter - that is outside...