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Talk to you later 15.06.2021 13:17

Cheap amplifier for passive speakers?
 
I am looking for a cheap amplifier to drive some passive speakers.

Stuff like this any good?

Option 1

Option 2

Option 3


Any other recommendations?

st2lemans 15.06.2021 13:36

Re: Cheap amplifier for passive speakers?
 
OK, I've looked into the chips they are using, and some articles comparing them.

#1 is the one you want.

https://www.reddit.com/r/BudgetAudio...which_is_best/

Tom

Phil_MCR 15.06.2021 13:52

Re: Cheap amplifier for passive speakers?
 
I think the Nobsound one would suit you :D

Caleb 15.06.2021 14:05

Re: Cheap amplifier for passive speakers?
 
Oh, this is one of my main hobbies. Now it's my turn to ask you questions ! :D

So:
1) How many speakers will you drive with this amp? Technical details (Impedance, max. power handling). Anything else is nice to have.
2) What expected power do you expect to want/need/use? In other words, how loud do you want it to be?
3) Can you describe the room where it'll live? Size, placement, surfaces around it (windows, curtains, floor, furniture, etc)? A pic would help a bit.
4) Expected fidelity. I assume you want something basic, nothing too fancy or hi-fi. Better to ask, though.
5) Other requirements: e.g. what and how many inputs do you think you'll use (e.g. CD player, turntable, DAB radio, AUX from the phone, etc)

Phil_MCR 15.06.2021 14:20

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by st2lemans (Post 3317765)
OK, I've looked into the chips they are using, and some articles comparing them.

#1 is the one you want.

https://www.reddit.com/r/BudgetAudio...which_is_best/

Tom

#1 what? item in the title or item listed in the body text?

st2lemans 15.06.2021 14:22

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Phil_MCR (Post 3317799)
#1 what? item in the title or item listed in the body text?

Option 1 in OP, which uses dual TPA3116D2 (each in bridged mode).

Option 3 uses a single TDA7498E.

Tom

Talk to you later 15.06.2021 15:07

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Caleb (Post 3317788)
Oh, this is one of my main hobbies. Now it's my turn to ask you questions ! :D

1) Two speakers

2) Recommended amplifier power 10 - 100 W

3) Speakers will sit next to the large PC monitors in front of me or on the shelf above my monitor. The wall behind the monitor is solid brick wall.


https://i.ibb.co/Rv3L1Jb/speakers.png

4) The speakers will be $200- $500 range. As an example DALI Oberon 3?


5) They will connect to my PC and sometimes mobile phone via Blutooth or wired connection.

Phil_MCR 15.06.2021 15:11

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Talk to you later (Post 3317825)
1) Two speakers

2) Recommended amplifier power 10 - 100 W

3) Speakers will sit next to the large PC monitors in front of me or on the shelf above my monitor. The wall behind the monitor is solid brick wall.


https://i.ibb.co/Rv3L1Jb/speakers.png

4) The speakers will be $200- $500 range. As an exampel DALI Oberon 3?


5) They will connect to my PC and sometimes mobile phone via Blutooth or wired connection.

OK. (in style of typical EF response): First we need to start with a complete refurbishment, layout re-think and sound treatment of your apartment...

Talk to you later 15.06.2021 15:27

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Phil_MCR (Post 3317826)
OK. (in style of typical EF response) sound treatment of your apartment...


Not an apartment, it is a goat shed :D

Axa 15.06.2021 15:32

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Talk to you later (Post 3317834)
Not an apartment, it is a goat shed :D

is that how hobbyraums are called these days? :D

Talk to you later 15.06.2021 15:38

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Axa (Post 3317836)
is that how hobbyraums are called these days? :D

It is just where I reply to you guys from :p No hobby rooms for under 120k guys like me.


https://i.ibb.co/Hpx2XFc/index.jpg

LtSoftDrink 15.06.2021 15:41

Re: Cheap amplifier for passive speakers?
 
Seriously clueless but interested. Can the OP’s gizmos be used to connect a PC to classic/passive loudspeakers and/or how can a PC be connected to a classic amp via perhaps “aux”?

Talk to you later 15.06.2021 15:44

Re: Cheap amplifier for passive speakers?
 
LtSoftDrink, I assume you saw this image?

LtSoftDrink 15.06.2021 15:51

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Talk to you later (Post 3317845)
LtSoftDrink, I assume you saw this image?

Ta, I didn't - imagine this means connection PC to speakers is a given. However, combination with existing analogue rig (turntable, tape deck) is something else, right?

Caleb 15.06.2021 16:00

Re: Cheap amplifier for passive speakers?
 
So the Oberons, as most Dali pairs, are 6 Ohms. That leaves all 8 Ohm amps out of the picture. 2 of the 3 amps you linked to in your first post don't state the max impedance, so I'd avoid them (it may be OK to use them with your speakers at lower power, but as soon as you cranked them up, you may risk damaging the amp). I understand you named the Dalis as an example, but please DO keep that in mind.

These Chinese cheap amps are likely to be noisier than higher-quality amps (mind the "likely"). Given the option, I'd rather buy a half-decent used amp than a new no-brand one (e.g. something like this, or this).

Finally, based on how you plan to place the gear, it seems you may really want a micro-format that is less of an "eye-sore" than the average-sized integrated amp (normally around 40 cm wide or wider, and weighting over 3kg). I personally like Cambridge Audio in the micro, mid-budget category (I have a CA pre-amp for my turntable myself), and I think the AXA 25 or 35 might be your thing if you're willing to splurge: https://www.azone.ch/cambridge-audio-axa25.html. If that's over your assigned budget, and for a little over Fr 100, you can get a Monacor (https://www.digitec.ch/de/s1/product...erker-11242358). Not as nice, but probably better quality than no-name amps.

In my suggestions I'm ignoring Bluetooth, because I can't recommend any amp that has that functionality (I just never tried it myself). I do have a small micro stereo, a Sony CMT-SBT100, but that's an integrated stereo with receiver and CD-player, but I wouldn't pair that to a NICE pair of Dali speakers.

axman 15.06.2021 16:11

Re: Cheap amplifier for passive speakers?
 
What about a DAC between PC and Amp?

I second that Monacor.

st2lemans 15.06.2021 16:15

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by Caleb (Post 3317850)
2 of the 3 amps you linked to in your first post don't state the max impedance

Only one doesn't, but it is 8Ohm for all three.

Tom

venetian 15.06.2021 19:57

Re: Cheap amplifier for passive speakers?
 
Based on OP's initial links and assuming something smaller than 40 cm is needed, I would recommend the amp I'm currently using myself, the OSD Audio Nero XD 2:

https://us.amazon.com/Nero-XD-2-Chan.../dp/B07B3G9YHD

or subsequent versions since mine has 2-3 years now:

https://www.osdaudio.com/streaming/w...link-3942.html

Has plenty of power to drive some decent bookshelf speakers (mine are 6 Ohm), it has a lot of connectivity options and IMHO good sound quality as well. I use it for both movies and music. The volume control is digital so you can use independently the knob or the remote. Paid a little more than average but does a good job.

Caleb 15.06.2021 20:10

Re: Cheap amplifier for passive speakers?
 
Quote:

Originally Posted by st2lemans (Post 3317863)
Only one doesn't, but it is 8Ohm for all three.

I checked again and you’re obviously right, only one doesn’t state the max impedance, but the other 2 both state 4 to 8 Ohms.

Still my opinion is: I wouldn’t buy no-name cookie-cutter amps, which have a single input, very dubious quality-controls, possibly a noticeable noise level, and those super unreliable power numbers (2x100W with a 12-24v power input using a 19v power supply, which means like a 5 amp load).

Talk to you later 18.06.2021 07:18

Re: Cheap amplifier for passive speakers?
 
Just an update!

My opening post Nobsound range might work good, but I have read reviews where they say that they spark up, give shock and are not even grounded. Don't really want to risk burning any of my expensive gear.

So I am down to these two (attached image). AXA25, I rejected as it has no headphone jack otherwise I might have taken it.

What I like about the Monacor one is that it is smaller, fan free but dog ugly.

I love the look of Schiit products, but not willing to drop that sort of coin-

https://www.schiit.com/products/vidar

https://i.ibb.co/pyK0Rcj/amp2.jpg


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