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This is a review and measurements of the Anaview ALC0100-2300 amp module. It is a compact design delivering 2x50W into 4 ohms with a built in power supply, and was on sale from 2010. It is still on sale for EUR121 per unit (https://www.lautsprechershop.de/hifi/anaview_uebersicht_en.htm). At...

This one's for you @restorer-john ! I recently bought a very well priced 4-channel TPA3255 module from AliExpress (see measurements here), and though I'd take the opportunity to try out some very cheap 36V SMPS modules at the same time. They were this one, nominally 36V/5A for less than 5 US...

We see a lot of 2-channel TPA3255 based modules, but 4 channel ones are rarer. I bought this one off AliExpress for $50 including shipping - that's $12.50 per channel! Build quality is OK but not great. The power and speaker I/O is all screw terminals, where better modules use spades. The...

@Archimago posted a set of measurements of the new Topping PA5 mk II (https://archimago.blogspot.com/2023/10/part-ii-topping-pa5-mk-ii-plus-pa5ii.html), and by eyeballing it I'm guessing it's using the new TPA3223 (https://www.ti.com/product/TPA3223), although with a lower than maxed-out power...

Update March 2024: Version 2 of the board is available at https://github.com/mattclarkdotnet/aes17_filter_25/tree/v2 v1 had good performance that equalled the AP SYS-AUX-0025. With the help and feedback of @sarieri @Hipocrates and others V2 aims to improve high power handling, tighten...

This looks quite handy, I just bought one for an active speaker project and will share pics when it arrives: https://www.aliexpress.com/item/1005005678173653.html?spm=a2g0o.order_detail.order_detail_item.3.5708f19cuzSL7O The TPA3255 is one of the better performing chip amps, but most modules...

My main speakers (Linkwitz LXStudio) do almost everything I could want, but to prevent over excursion on the dipole subs they have an LR4 filter applied at 30Hz. This makes movies in particular lack a little low end oomph. I could add one or more subs (e.g. SVS PB-1000) but they are even...

I bought one of these (https://www.marantz.com/en-us/product/av-receivers/cinema70s) to use as a pre-pro, as it has a full set of pre-outs. I might use some of the amp channels if I add surrounds to my system later. All I need is reliable HDMI and audio switching for an Xbox, Apple TV...

Every time I open the DIY Audio Forum there are 9 pinned threads at the top making it hard to see new activity. Do we really need them all to be pinned? I worry it's reducing interaction with one of my favourite ASR forums.

I recently reorganised my home office and now have a nice 50" TV. It's a bit high up, and only 2.5m from the sofa. The sound is of course awful so I want to improve that situation. Problem is I don't want anything that sticks out from the wall so am looking for either a soundbar or flat...

Sometimes either the market doesn't have quite what you want, or you just want to scratch an itch. I wanted an amp with the following features and thought folks here might be interested in what I came up with: 8 channels to drive 4 way active speakers (Linkwitz LXStudio) Really compact to fit...

All I want from a desktop speaker is these things, and I am struggling to find anything that satisfies the requirements: Sits on a desk, either side of a computer monitor Much less visually dominant than an LSR305p. Think JBL 104. Even frequency response when seated normally - say a 1m...

In another thread there was some discussion of matching levels for test tracks, and the topic of how to measure levels came up, so I tried a quick comparison. The phone was balanced on top of the UMIK, so it's mic was only about a centimetre away from the UMIK's capsule: In a quiet room I get...

This is a subjective, qualitative, sighted evaluation and comparison of a prototype pair of March Audio Sointuva loudspeakers with Purifi woofers and Bliesma tweeters. The purpose of the exercise was for Alan (Mr March Audio) to get some feedback on the prototypes from “fresh ears” and to geek...

I want to add a music detect feature to my DIY TPA3255 power amp. Idle power is low but at 8 channels x 260W/channel it does add up. I'm using a Neurochrome ISS from @tomchr to control startup, and it has a trigger input perfect for this purpose - all I have to do is short it to ground when...