What's a Balance Preamplifier Should Be Like?

[Sokel]

I think someone must explain Fosi the hi/lo pass function in detail,they don't seem to fully understand.
@Fosi Audio ,if you want an example of the sub out and high pass combined have a look at this very cheap design:

MCRS-2BI or MCRS-2BI3 2Way Bi-Amp Active Stereo Electronic Crossover 24db Low/High Filters - Motronix

MCRS-2BI MCRS-2BI3 High Quality Professional 2 Way Electronic Crossover For Active Bi-Amplification. High Quality Low Noise Op Amp MCRS-2BI model Work with Small Dual AC Transformer (Transformer not included) MCRS-2BI3 model Work with Dual 15-20Vdc Power Supply Low Freq. Range <250 Hz (Can...

motronix.co.il

(i have couple of dirty measurements here about it )

 

[Guddu]

I think someone must explain Fosi the hi/lo pass function in detail,they don't seem to fully understand.
@Fosi Audio ,if you want an example of the sub out and high pass combined have a look at this very cheap design:

MCRS-2BI or MCRS-2BI3 2Way Bi-Amp Active Stereo Electronic Crossover 24db Low/High Filters - Motronix

MCRS-2BI MCRS-2BI3 High Quality Professional 2 Way Electronic Crossover For Active Bi-Amplification. High Quality Low Noise Op Amp MCRS-2BI model Work with Small Dual AC Transformer (Transformer not included) MCRS-2BI3 model Work with Dual 15-20Vdc Power Supply Low Freq. Range <250 Hz (Can...

motronix.co.il

(i have couple of dirty measurements here about it )

you just said what I thought of saying a few times but then every time thought it can not be true
Have replied on this topic a few times, after all!

 

[Sokel]

but then every time thought it can not be true

Post #91 made it clear I think.
Can be just translation issues so an example works better.

 

[Chrise36]

Question is whether the balanced type of amplifier is from input to output? Or is it just only balanced input converted to non-balanced amplifier and then the single ended output is converted to a balanced output. If the second is thought then the concept is worthless to me.

Sub out mono stereo switchable and peq if it is a preamp. More outputs can be useful also.

 

[shion_ca]

Optional Tube Buffer, fully balanced, separate power supply, very granular gain options, unity gain mode, dsp integration, USB in... hey probably not everyone's list in a pre-amp.

 

[Mikig]

Hi Fosi! I was just thinking about it today. Do you have an idea on release times? Thank you

 

[Martin]

Needs more than one balanced input.

 

[defec1]

ironically no balance control....

 

[Zuiko]

Case 1: For desktop PC setup (to drive V3 Monos):
High:
- Subwoofer out with crossover.
- Change to/or add a 1/4 inch headphones plug
- If adding a DAC, must beat the SMSL SU-1 (otherwise leave analog).
- More narrow form factor (go vertical on rear inputs).
- Super quiet when turning on/off or changing inputs/outputs etc. (no speaker pops)
Nice:
- Headphone / speakers toggle button on front (so there is no need to plug/unplug the headphones).
- If the volume is digital, remember the last volume when switching between headphones and speakers
- Match the Z3 Monos: External power supply.
- Bass/Treble/Mids
- A volume knob that's yummy to turn.
Not needed:
- Remote, volume display.

Case 2: As preamp for a dedicated stereo system:
- Subwoofer w/ crossover
- At least one more RCA input
- Remote
- Volume display (dimmable!)
- Auto sleep
- DAC or Phono preamp: Should match the V3 Mono's quality, otherwise leave out to lower the cost.
- Form factor can be wide.

Ultra Deluxe++ Fun Version:
The ability to add multiple opamps/tubes, and a toggle switch to pick which one is active!
Could be both fun and useful to control based on music genre, active vs passive listening, dialog etc...

Thx Fosi!