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Chicago Electronic Distributors sells an 18 volt power supply with the Volt D+. In one of the thread on diyaudio, I think someone from allo thought hte best tradeoff between linearity and power was at 18.2. You might be able to go to 26 volts, but my understanding is that 30 volts would fry it.

The tpa3118 (the chip for the Volt +d) will work with 12 volts, but you'll y be getting less wattage or power. It's not a huge difference, I think the Volt D+ recommended voltage is a little under 20. I'd recommend the Allo Volt + board which is $39 or so and you can put it in your own case...

I have both the Volt +d and the Aiyima. I use them both with our television in our living room usually with a pair of RCA Lx5 speakers (the ones with the Linaeum tweeters) though I've also used them with a pair of self-built SEAS 5.25 woofer/mid and 1" SEAS tweeter that are probably better than...

It looks interesting, though the writeup in the e-bay description doesn't exactly inspire confidence. I wonder how it compares with the 3e audio board and/or the TI sample board. The fully built amp version of this doesn't sound like a bad deal. It includes a power supply, switches...

I'm pretty sure yours is an active riaa section and you should be okay.

If your riaa section doesn't have a power source, it's passive, though that's different from not having an on/off switch. I would not match a passive riaa section to a passive pre-amp or a simple selector switch. The amount of voltage going to your amp plays a big role in what your amp...

sorry, I missed that detail. I'd maybe look for a passive pre-amp, but that may depend on the gain of your phono stage, if it's an active phono stage. In the Class D world, the stated power outputs of amplifiers aren't really that reliable. In real life, I find that it's not necessarily the...

If you're trying to use a turntable, you'll need a riaa section or strain gauge (very rare). Even dedicated pre-amps these days often don't have a separate phono section. If you're serious about the sound, I'm not sure that a simple switching device is going to help. With cheaper devices of...

There are es9038q2 dacs that seem to take 9-15 volts. I can't find Toppings recommendation and I'm not near my DAC at the moment. I suppose it's possible, but I wouldn't try higher voltages unless Topping clearly states that it's okay. The DAC chip alone doesn't determine the max voltage for...

that won't work, because the voltage is too high and it seems to be fixed at 13.8. I run mine at about 6.5 volts and the USB one you were looking at on e-bay is at 5 volts. I'd check to see what Topping recommends. 5 volts is definitely fine. My recommendation would be to try a usb connector...

I currently use a regulated variable supply that I bought from Fry's in California for $12 many years ago. I have used different USB supplies. As long as they're 5 volts and have sufficient amperage, it'll work. A regulated power supplies will generally sound better though.

I have the D50 and I've been happy with it. $150 is a very good price. they may have dropped it some because of the D50s. Much of my listening is Spotify Premium, so I suspect there's a point of diminishing returns with dacs. On the d50, there's a clear difference with higher resolution...

I think the tda7491 is class D. The TDA7297 and the other chips that Folsom uses for his amps are class AB. I haven't heard either branch of STM's amplifier chips, so can't say much beyond that.

I've never heard any TDA-based amps. The people at Audio Circle seems to be quite impressed with the Folsoms, but they are true kits, as in you solder parts onto a bare board. I did notice that most of the activity about the 7297 based amp was during a stretch between the t-amp and the TPA 32xx...

I think a person or two here was comparing bare boards and the pre-built, was it airbus? Yes, that was me. I think some of the bashing of the FX Audio tpa 3250 amp comes from the Audio Science guy who wrote a scathing review of it a little while back. It's worth mentioning that he doesn't do...

After I switched over the to the 3eaudio, I moved the allo +d to TV duty in the living room where it's connected to an Amazon Fire Cube. It's overkill for the level of our video setup, 10 year old 40" Samsung with two Radio Shack LX5 speakers, but the +D has been fine. If you need to turn it...

I'd be surprised if DAC is using their own amplification chips. I can certainly see his designing his own boards, but very few companies have used proprietary chips, tubes, or transistors. They may have something that's a little different from wherever they're sourcing it, but in the...

I've also wondered if the volt_+ might have been intended for Allo's cat condominium of stackable boards for the raspberry pi. The positioning of the RCA's etc, might make more sense in that configuration, thogh iirc the volt amp intended for that configuaration had no RCAs. I'm not sure...

The volt plus board was probably laid out that way for a reason. Electrical and magnetic fields are perpindicular to one another, so I suspect they were trying to minimize interaction. It's not the best ergonomically, especially if you're trying to put the board in a case. It's not, however...

I had a couple Sure tk2050 amp boards. They were fine, though they lacked the clarity and detail of the tpa 311x or tpa325x based amps I've heard. Sure's stuff is built well, designed reasonably well, but it's meant for a very low price point. At that time, a lot of people seemed to be...

Allo has said they're working on a tpa3255 amp. They're trying to match the performance of one of the higher end tpa3255 implementations, at least that's what they said. The +D took a fairly long time to come out, and I wouldn't be surprised if this one takes a while as well.

The Volt+'s capacitance multiplier is mostly there to help with so-so power supplies, as in most laptop power bricks. It's very helpful when the power supply itself isn't very "stiff". When I went to a higher amperage 22 volt regulated supply, I found that it helped to turn down the...

more of an fyi. There's yet another cheapo tpa 3255 assembled amp on e-bay. https://www.ebay.com/itm/TPA3255-Bluetooth-5-0-HiFi-Stereo-Digital-Class-D-DAC-Decoder-Amplifier-Amp/312570814272?hash=item48c6ac1f40:g:qcgAAOSwBlxcro9x This one appears to have a built in power supply...

Actually, it's my opinion that the 3255 sounds better all around than the 3116. They do sound a little different and I can see why some who like a more tube-like feel might prefer the sound of the Volt +d, but that's different from preferable. I prefer the sound of the 3255 in the upper...

One of the guiding principles for a lot of audiophiles from the analogue era was that simpler was virtually always better. One of the magic ideals was "straight wire with gain." Class A got popular because it prevented switch mode distortion. Tube circuits tended to be simpler than their...