amplifier

Fosi Audio recently sent me a fairly new product to try out, their N3 bluetooth receiver/headphone amp. It's a bit of a niche product but I was interested to review one after seeing the photos. It is currently available on "that auction site" for $60, but I don't see it yet on Fosi's main...

thank you in advance and I appreciate any help or ideas. I used to run 12 inch passive subwoofer with a car amplifier powered by a 12 volt computer power supply unit, recently I upgraded my system and used a fosi audio bt30dpro, however currently I want to upgrade it again with a new subwoofer...

I have bought a used Music Fidelity A3 integrated amp today. But the volume doesnt work and there is static on the left channel. Apperantly the unit took a dive at some point but besides some dents to outside it seems very clean inside. Can anyone tell me how i might solve this please?

Hello, lovely people. I have a small YouTube channel that focuses on car audio measurements and testing. Since I joined SQ (sound quality - opposite of SPL) community, I realised that a lot of car audio is based on myths and fairy tales from "back in the day". My goal is to start fresh and test...

Am selling an almost new Purifi EVAL1 amplifier recently built from all new parts including Hypex A400 SMPS. It is in a nice Ghent case with blue front LED and has been measured to validate performance as shown here...

Wondom AA-AB31471 1 x 30 Watt Class D Amplifier Board Review 1. Intro I wanted to have a small audio system for my holiday trip, not to depend on usual TV set sound available at the hotels and pensions. As a speaker I would take my small JBL Control 1 Pro, so there was a question of the...

After building my first tube amp (https://www.audiosciencereview.com/forum/index.php?threads/building-a-valve-amplifier.29903/ ; https://www.audiosciencereview.com/forum/index.php?threads/hpa-glow-one-diy-kt88-amplifier.39332/#post-1468245 ) a friend of mine listened to it and said he wanted it...

Hi everyone! I am writing to better understand an issue that my amp displayed today. Specifically, the amp gives a periodic popping sound on the right speaker, even at 0 volume. The amp is question is a Pathos Logos that I recently bought used (worked fine until today!). Something to note is...

New tech from ICEpower announced. The prototype is already around SINAD 102 (1kHz 5W into 4 ohms) with ~300W (1% THD+N of 1kHz into 4 ohms) and no rise around the knee. And with 6.67 kHz riding along with the 1 kHz, the old limitations of HCOM seem to have been solved...

The title basically says it all (but clearly not enough or I wouldn't be posting). I have an aiyima a07. I replaced the opamps (I know this is seen as stupid, but it was cheap and easy, and I am only just getting back into this hobby) but I am ~95% sure this was happening prior to the change...

Hey all, I'm in the market for an Apollon or Nord with preferably the Hypex NCx500. I would settle for a Purifi 1ET400A or 1ET7040SA as well. Let me know what you have. I'm US based so the mains voltage will need to be 110-120V. Thanks!

Hello, first of all, this is my first post on this forum so I apologize for any mistakes. If I am not asking my question in the correct sub-forum please tell me. I recently bought a pair of Elac DBR62 speakers since they fit in my budget range and were recommended on this website. Now I need...

Firstly, I would like to say, this is my first Fosi Audio product. And so I would like to mention that the build quality and the sound is great, no clicks or pops, and no dreaded white noise whilst on standby. Especially at the price. I've definetly been swooned. Now my actual question is...

My question is this : I switched off the amplifier , even disconnected it electrically.. how is it possible that my rear speakers worked (the one connected to the blue jack here) I , of course, unplugged the Realtek from the pc to see if it could be the cause but not… Can an amplifier...

Hello ASR, Hope everyone is enjoying this wonderful week of weather (depending on your location, I suppose). I'm looking at a couple different case designs for an upcoming DIY project, and will likely be using it as direct reference for an upcoming launch offering fully assembled Hypex and...

Brief overview: Klein + Hummel O110, around 15 years old, making noises as seen in the video below. Quite temperamental tweeter electricity noise, started around 3 months ago, 60% of the time it works perfectly fine, it is unusable when this happens. The noise still happens when XLR cable is...

Hi! I am looking for an amp to complement The Revel Concerta2 speakers. The Cambridge Audio AXR100 is number 1 on my list, but I got second thoughts. I tend to keep my work environment eco-friendly, low-power consumption etc I prefer to use mobile devices and keep energy costs as low as I can...

Hi Never posted before. But I am in the search for a set of pure class a Monoblocks with a wattage output of 300w into 8ohms….. I cannot seem to find a useful site to help my search filters! Does anyone know of any that don’t cost the earth? Budgetary speaking in the region of £1500 each...

I've been looking at small amplifiers for nearfield listening at my desktop. The majority of what I see recommended is cheap Chi-fi class D amps, some of which measure really well here on ASR. Something like the Aiyima A07 sounds perfect for me, on paper. However, I find the lack of quality...

Hello. Recently I bought elac's for 140$ and now I am searching for a matching amplifier. I would prefer used or vintage one. My budget is about 250$. I was looking at Marantz PM5005 or PM6003, Technics SU-Z2, Rotel RA 970BX or RA 413, ITT 8033, Yamaha R-S500, NAD c350 or c326bee, Cambridge...