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Cheap Bluetooth 2 channel amp

TKoP

Well-Known Member
I've got a speaker kit i'm finally going to get around to building sometime soon. My initial thought is to bring them in for my office - partly as a talking point, but also to be able to listen to some music while I’m working. The best place for me to put it is on a file cabinet facing my desk. To drive them, I was thinking of getting some cheapie Bluetooth digital amp. I’d use my phone’s Bluetooth and steam the music from that. I’m not really looking to spend a ton – as long as it’s not crap I think I’d be fine with this one. Anyone have experience with any of these devices? For example, i found this on Amazon. And a used one like this. What are your thoughts?
 

Lone Stranger

Well-Known Member
If this were my situation, I would purchase a standalone Bluetooth receiver and connect it to a separate audio system. I may be looking for one to connect to my living room component system in the future.
 

TKoP

Well-Known Member
If this were my situation, I would purchase a standalone Bluetooth receiver and connect it to a separate audio system. I may be looking for one to connect to my living room component system in the future.
I'm not sure exactly what you mean -- are you talking about a "regular" receiver that has bluetooth connections? Space is an issue here -- that still might not be a bad option, but space could be an issue. The speakers that I'm looking to build are probably pushing what I can do... but still worth considering.

Thanks.
 

Flint

Dog Faced Pony Soldier
Superstar
I keep buying the cheap Dayton Audio digital stereo amps because they are amazing! Get the 100w model with the bluetooth receiver built in.
 

Lone Stranger

Well-Known Member
I'm not sure exactly what you mean -- are you talking about a "regular" receiver that has bluetooth connections? Space is an issue here -- that still might not be a bad option, but space could be an issue. The speakers that I'm looking to build are probably pushing what I can do... but still worth considering.

Thanks.
You can get Bluetooth receivers that are about the size of a wifi router with line outputs. I have seen a few like that on Amazon.
 

Wardsweb

Renaissance man
I use a Logitech Bluetooth adapter in the back room. It measures 2x2 and 1" tall. I got it on Amazon for $20

blutooth.jpg
 

TKoP

Well-Known Member
Ah
I keep buying the cheap Dayton Audio digital stereo amps because they are amazing! Get the 100w model with the bluetooth receiver built in.
I did look at those. I might go that route, but i was hoping to be more of an accountant (i.e., cheap)

You can get Bluetooth receivers that are about the size of a wifi router with line outputs. I have seen a few like that on Amazon.
I linked to one up at the top -- it's what i was kind of thinking as well. Just didn't know if there were any that someone bought that were in the <$50 range.

I use a Logitech Bluetooth adapter in the back room. It measures 2x2 and 1" tall. I got it on Amazon for $20

View attachment 10247
I need power -- i have an old denon receiver that I could bring in and buy one of those. That might be an option if I really wanted to keep it on the cheap.
 

Flint

Dog Faced Pony Soldier
Superstar
I did look at those. I might go that route, but i was hoping to be more of an accountant (i.e., cheap)
There are cheaper ones out there, for sure. Here's what you should look for:

Full frequency spectrum (at least 20-20,000 Hz)
An increase of at least 10% in power output between 8 ohms and 4 ohms (most are only rates for 4 ohms at 10% THD, which is a BS measurement)
A power supply which matches the power rating (most use external power supplies, so if the supply cannot do 200 W, then the amp will never produce 100W x 2).
Low noise (SNR + Noise of at least -96dB, preferably more).

The cheap models can work fine for low levels and with speakers that have no bass output below 50Hz, but why not dole out for an amp that can do the full spectrum and full rated power? Especially when the amp is still only $75?
 

Flint

Dog Faced Pony Soldier
Superstar

TKoP

Well-Known Member
Did you choose an amp?
Not yet... i haven't started the build on the new speakers yet (procrastination, dread and having to find all the "stuff" i'm going to have to find in my garage). I figured it'd make sense to wait until I actually get to the job itself before I pull the trigger.

That being said, i'll probably follow your advice and get the Dayton.
 
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