measurements

CD player vs. DAC shootout I was curious to compare parameters of the nicely built CD player Vincent CD-S3 (2004) vs. a good but not the newest DAC, Cambridge Audio DacMagic Plus (2012). Cambridge DacMagic Plus was already tested here. Vincent CD-S3 is a player with HDCD decoding option and has...

Trend DV-821A This is a review and measurements of a cheap DVD player, Trend DV-821A. It costed about $35 in 2009. It plays DVD/MP4/SVCD/VCD/CD/HD-CD/WMA/MP3/JPEG files. Parameters as per user manual: Frequency response … 20Hz – 20kHz / +/-1dB / Fs = 192kHz Audio S/N … >= 90dB Dynamic range...

ONKYO DV-SP503E universal player I bought this universal player in 2005 and it is still working. It is based on cheap TI PCM1742 D/A converter. It works now only with original CDs (does not read CD-R well), reads DVD and DVD-A and has troubles with SACD. So I restricted my CD measurements to...

Technics SL-PG100 This was my first CD player, bought in 1991. It is based on MN66271 1-bit MASH converter. It is incredible but it works flawlessly till nowadays. However, I never liked the sound of the unit and replaced it soon with SONY XA-2ES. Technics was also responsible for my initial...

Class D amplifiers have defined a new discipline in audio amplifier design and parameters, similarly as digital CD audio after its arrival in 1980-ties. After some time after its arrival, it was apparent that CD measurement methods would need something else and more than previous, purely analog...

When I first saw schematics of vintage Kenwood KA-5010 amplifier, 2 years ago, I was immediately attracted and decided to build a circuit copy, better say a copy of the circuit topology with some newer solid state parts used. There were 2 points leading me to this decision - frequency...

Hi, This is Lars from Germany. I am certainly an absolute beginner in terms of understanding measurement results. I am considering buying a used Bryston BP 26 - roughly ten years old. Can someone help me out and explain whether the measurement results for the preamp section (can be found here...

I wonder if @amirm 's test would confirm these impressive numbers that MSB has once shared about its R2R DACs. Comments?

hi-finews.com has run a performance analysis on the NAD M10 streaming, integrated amplifier recently, and this is what they found - I can't attest to the validity of it , though...

After negative comments from fellow ASR members whose opinions I respect, I see their point and have deleted much of this post and the poll that was part of it. Those components were detracting from my original motivation the starting this thread. Although I am very interested in the...

It felt inappropriate to post this in Amir’s “Should we (I) get into speaker testing & measurement” thread, so I started a new thread here. One of the sites I follow regularly on the internet is Lowbeats, see: https://www.lowbeats.de This is a German HiFi-Online-Magazin, as they call...

Hello, I'm new here, although I've been lurking and reading the reviews for a few weeks now. I hope this is the right place to post this question, I saw other posts asking for recommendations, etc, so I thought this was as good a forum as any to ask. My question relates to the power...

I saw someone on Reddit post this morning that they'd gotten this DAC/AMP, which was the first I'd heard of it. Searching Aliexpress lead me to these...

Hey guys, this is actually my first post on this forum so maybe a little introduction is in place. I am an electrical engineer from Finland and I've been in the headphone audio scene for quite some time now, went through a lot of gear and decided to do some measurements of my own. My measurement...

Here we go again, this time measuring a cheap USB-C-with-charging headphone adapter dongle after reviewing the bundled Pixel 3 dongle as well as a Moshi dongle. This is the third installment, and I will follow a similar protocol to my previous reviews. The star of this show is the VIMVIP Type C...

Here we go again, this time measuring a more expensive USB-C headphone adapter dongle. This is my second review, and I will follow a similar protocol to the previous one, with a few small changes. The star of this show is the Moshi USB-C Digital Audio Adapter with Charging. This is an accessory...

So here we go, my first set of measurements using my shiny new QA401. The measurement protocol is a first iteration; comments and feedback are welcome. For another take on Pixel dongles, see these measurements and these ones, both by amirm. One thing that is worth noting is that amirm's...

I just wanted to make a comprehensive post of all measurements, of the ApplePi DAC and Volume-Clocker combo. SNR A-Weighted (XLR): SNR no-weighting (XLR): SINAD (XLR): Dynamic Range A-Weighted (XRL): Dynamic Range no-weighting (XRL): THD+N vs Level (XLR): IMD vs Level (XRL)...

The absence of properly documented measurements from manufacturers was mentioned in the Yggy measurement thread. This is true for cable, most DACs and Amps. To me the main reason for this is that there is no competitive edge in showing those as they would all be the same or would be bad compared...

We'll start with the 12 khz Jtest in a 32k FFT. And what a graph it is. Yes, the horrid looking result is over coax connection. The peak jitter spikes are at – 65 dbFS. There are lots of them not much lower than that, and a wide area is raised by random jitter noise too. The spacing on the...