Fosi Audio V3 Mono Amplifier Review

[Negatywny]

goddamnit

 

[gwing]

so the issue of stereo mono is the only important "parameter" with these cables? Are microphone cables ok? Maybe some recommendations and examples?

Something like this cheap or with Neutriks

 

[Negatywny]

ok, thx.

But why it has to be stereo cable? For me it looks like two mono cables - for two V3 MONOS - would be ok...?

 

[DavidM1]

ok, thx.

But why it has to be stereo cable? For me it looks like two mono cables - for two V3 MONOS - would be ok...?

Because it is balanced. You need two signal wires even though it is a mono signal.

Microphone cables with XLR connectors will be fine although maybe a lot longer than you need. Amazon has a wide range of interconnects including TRS to male XLR, which is the type I’ll be ordering to go from my DAC to the V3 monos.

 

[EddNog]

ok, thx.

But why it has to be stereo cable? For me it looks like two mono cables - for two V3 MONOS - would be ok...?

Yes. This will work fine.

-Ed

 

[gwing]

ok, thx.

But why it has to be stereo cable? For me it looks like two mono cables - for two V3 MONOS - would be ok...?

The cables need 3 conductors, screen, plus and minus signals. That's a mono cable not stereo. So you need a pair of cables for either two monos or one stereo amp with XLRs.

You *can* get a 5 pin xlr socket for stereo connections rather than a pair of 3 pins, but the 5 pin is very unusual, and would need a 5 conductor stereo cable, but you'll probably never see one of these.

 

[TonyJZX]

just buy two mono mic cables of a length you require... and then slap a sticky L/R label on it if you need it

they are real cheap anyway

 

[DavidM1]

Yes. This will work fine.

-Ed

The cables need 3 conductors, screen, plus and minus signals. That's a mono cable not stereo. So you need a pair of cables for either two monos or one stereo amp with XLRs.

The distinction in the original question was between two types of 6.3mm jack cables: a TS tip and sleeve and a TRS, which is tip, ring, sleeve. Guitar leads are TS while TRS cables are often used for stereo signals and can carry balanced mono signals.

TS cables will not allow a balanced connection. TRS and XLR cables will.

No one has said that the TRS cable will be carrying a stereo signal in this scenario.

 

[EddNog]

The distinction in the original question was between two types of 6.3mm jack cables: a TS tip and sleeve and a TRS, which is tip, ring, sleeve. Guitar leads are TS while TRS cables are often used for stereo signals and can carry balanced mono signals.

TS cables will not allow a balanced connection. TRS and XLR cables will.

No one has said that the TRS cable will be carrying a stereo signal in this scenario.

Thanks for the clarification. In my head the only type I was considering was 3-pin XLR male on one end and 3-pin XLR female on the other. I did not take TRS balanced connections into thought at all, my mistake. I also was not at all thinking about 4-pin XLR or TRRS.

-Ed

 

[gwing]

Thanks for the clarification. In my head the only type I was considering was 3-pin XLR male on one end and 3-pin XLR female on the other. I did not take TRS balanced connections into thought at all, my mistake. I also was not at all thinking about 4-pin XLR or TRRS.

-Ed

OK, then you just need something like this that I purchased recently. matching purple colour

 

[EddNog]

OK, then you just need something like this that I purchased recently. matching purple colour

I think you mean @Negatywny just needs that. I actually have a few pairs of spare/unused XLR cables laying around as it is.

-Ed

 

[Chipk]

I would like to know a little more of the use case for the balanced connector. For example, my setup is wiin mini -> schiit dac -> V3 ) to my elac dbr62. I control volume via wiim home (mostly)
So.. what preamp or preamp-> dac calls for a balanced cable (xlr) connection ?

 

[somebodyelse]

I would like to know a little more of the use case for the balanced connector. For example, my setup is wiin mini -> schiit dac -> V3 ) to my elac dbr62. I control volume via wiim home (mostly)
So.. what preamp or preamp-> dac calls for a balanced cable (xlr) connection ?

For home audio the main advantage of balanced connections is to avoid possible ground-related noise issues like hum and 'USB noise'. If you never have these problems you don't need balanced connections.

 

[gwing]

I think you mean @Negatywny just needs that. I actually have a few pairs of spare/unused XLR cables laying around as it is.

-Ed

Exactly so, sorry.

 

[Keauval]

Hi everybody,
I just have a little question.
Do you know why the Max power of 2x V3 Mono is really similar that 1x BT20A pro with a 48V PSU ?

BT20A Pro

V3 Mono

I'm asking myself if the upgrade is really valuable.. I have 83db pair of speaker and they need a lot of power !
Thanks

 

[NTK]

Hi everybody,
I just have a little question.
Do you know why the Max power of 2x V3 Mono is really similar that 1x BT20A pro with a 48V PSU ?

BT20A Pro
View attachment 375781

V3 Mono
View attachment 375783

I'm asking myself if the upgrade is really valuable.. I have 83db pair of speaker and they need a lot of power !
Thanks

The mono version runs the TPA3255 amplifier chip in the parallel bridge-tied load (PBTL) mode. It doubles to current output capacity of the stereo version by running both channels in parallel, but it does not increase the voltage output capacity.

The PBTL mode is useful if your loudspeaker has very low impedance (< 4 ohms). It offers very little advantage if your speakers' impedance does not drop significantly below 4 ohms for a large part of the frequency range that demands high power (such as <200 Hz).

 

[rhing]

I inquired Fosi Audio about my Kickstarter order. Here is the response I received via their Web site chat:

“We will be shipping around the 20th of June. Please be patient as orders will be high and we will ship in chronological order of purchase!.”

I am # 92 in the Kickstarter queue.

 

[Megaken]

I inquired Fosi Audio about my Kickstarter order. Here is the response I received via their Web site chat:

“We will be shipping around the 20th of June. Please be patient as orders will be high and we will ship in chronological order of purchase!.”

I am # 92 in the Kickstarter queue.

You'll be lucky if you'll get it in August/Sept.

 

[DavidM1]

You'll be lucky if you'll get it in August/Sept.

Lol. I’m a bit over this kickstarter process too.

 

[Borland]

I am Backer No.4