Which UPS comes with Baetis Reference?

[Plasmatico]

Does anyone knows which UPS comes or is recommended to use with the Baetis Reference?

 

TIA,

 

MJC

[stevebythebay]

Ships with unit - CyberPower® 850 VA UPS model number CP850PFCLCD

 

Baetis Audio-Power Supplies

[Plasmatico]

Thank you.

 

If I connect my Shunyata Hydra 8 or Jena Labs power conditioner to the CyberPower do you think it will further improve the sound quality? I will only connect low power components (Lumin A1 and Shindo Pre).

[Audioseduction]

Thank you.

 

If I connect my Shunyata Hydra 8 or Jena Labs power conditioner to the CyberPower do you think it will further improve the sound quality? I will only connect low power components (Lumin A1 and Shindo Pre).

 

I have the CyberPower CP1500PFCLCD PFC Sinewave UPS 1500VA 900W unit plugged into my BP-35 Signature Plus Ultra Isolator. I have my music server external LPSU, media converter, DAC and my pre-amp plugged into the CyberPower unit with good results. The CyberPower unit is 100% silent.

 

I would plug the CyberPower unit into your Shunyata Hydra 8 and then plug your front end equipment into the CyberPower unit. So plug the Shunyata Hydra 8 directly into the wall. You should get good results like I did.

[PewterTA]

I used to use Cyberpower and APC "computer" UPSes, until I realized it was effecting the sound for the negative. I know Baetis recommends it, but for sound quality, all it's doing is actually putting noise into your computer stream. The only UPS I didn't mind as bad as all the rest I've tried is the APC S15 or S20 I think it was.

 

All the rest have noise coming off them that negatively effects the sound.

[Audioseduction]

I used to use Cyberpower and APC "computer" UPSes, until I realized it was effecting the sound for the negative. I know Baetis recommends it, but for sound quality, all it's doing is actually putting noise into your computer stream. The only UPS I didn't mind as bad as all the rest I've tried is the APC S15 or S20 I think it was.

 

All the rest have noise coming off them that negatively effects the sound.

 

Definitely not my experience.

[djtw]

I have the CyberPower CP1500PFCLCD PFC Sinewave UPS 1500VA 900W unit plugged into my BP-35 Signature Plus Ultra Isolator. I have my music server external LPSU, media converter, DAC and my pre-amp plugged into the CyberPower unit with good results. The CyberPower unit is 100% silent.

 

I would plug the CyberPower unit into your Shunyata Hydra 8 and then plug your front end equipment into the CyberPower unit. So plug the Shunyata Hydra 8 directly into the wall. You should get good results like I did.

 

Hi,

Just wondering why you decided to plug the CyberPower into the Bp-35 and not the other way around, with the CyberPower plugged into the wall. Is this what BP recommends?

I have a CyberPower on order and was going to plug my isolation transformer into it and then my audio sources into the transformer. Not sure if this is the best way.

Thanks for any suggestions.

[Audioseduction]

Hi,

Just wondering why you decided to plug the CyberPower into the Bp-35 and not the other way around, with the CyberPower plugged into the wall. Is this what BP recommends?

I have a CyberPower on order and was going to plug my isolation transformer into it and then my audio sources into the transformer. Not sure if this is the best way.

Thanks for any suggestions.

 

Because the isolation transformer has no power limitation where the UPS does. I also want to make sure my components get a clean Pure Sinewave power. The isolation transformer will also isolate the UPS from the power grid. I have my Music server external PS, media converter & DAC plugged into the SURG/Battery side and the pre-amp plugged into the SURG side of the CyberPower unit.

[JohnSwenson]

I just got a CP1500PFCLCD but haven't had time to play with it yet. First off the PFC versions are very different from the non-PFC versions, so just saying CyberPower is not sufficient, the series is important.

 

From my reading of the documentation this device runs in three modes:

 

1) Bypass, the AC in goes to the AC out, there is some filtering but the out is NOT being fed by the inverter. There is a SMPS on the line which is charging the battery. As far as I can tell this is the normal mode of the device and is what is happening most of the time.

 

2) AVR mode. The SMPS supply feeds the inverter. In this mode the inverter IS feeding the output. As far as I can tell this mode is only used when the AC mains voltage is "out of spec", either too low or too high. If it is within range of "normal" this mode is not active.

 

3) Battery mode. The battery drives the inverter. This mode is only supposed to happen when there is 0 volts on the input (or very low, too low to run the SMPS supply)

 

If the above is really true then in normal operation the "puresinewave" inverter is turned off and you are not getting any advantage from it.

 

Now you COULD put a big variac in front of the device and dial it down until the AVR mode kicks in and then you would be running off the inverter. An isolation transformer with a lot of taps might also work as well, just set it to a 90V tap and you will probably be in AVR mode.

 

There may also be a way to have it always run in AVR mode but I have not found that in the manual.

 

I'll be doing some serious experimenting with mine over the next few days and let you all know what I find out.

 

John S.

[One and a half]

I used to use Cyberpower and APC "computer" UPSes, until I realized it was effecting the sound for the negative. I know Baetis recommends it, but for sound quality, all it's doing is actually putting noise into your computer stream. The only UPS I didn't mind as bad as all the rest I've tried is the APC S15 or S20 I think it was.

 

All the rest have noise coming off them that negatively effects the sound.

 

It is likely this can happen, since the noise from the audio components (mainly harmonics and pulsed current) have nowhere else to go other than congregate at the UPS, rather than the house network which effectively has a lower source impedance than the UPS.

 

To minimise this cross pollination of AC line noise so that it doesn't affect other audio components is not so simple at the AC side. For some modest results, I measured a drop in voltage harmonics of about 10-18db something (IIRC) on the AC side using a balanced transformer. To avoid data loss which I experienced far too often, I bought an Eaton 9135 UPS for HP Z800 just last week where the music files are stored. Haven't noticed much of a change in the sound just yet, but it's early days, certainly not worse.

 

I will work on the exercise where the balanced transformer is supplied by the UPS, see what goes on there with a scope.

[Audioseduction]

UPDATE!!!

 

After some critical listening sessions I have made a small change for BEST results in SQ playback. I now plug my Pass Labs Pre-Amp directly into the BPT isolation transformer. I have my entre digital front end which includes the music server external LPSU “UpTone JS2”, USB to Optical Glass Fiber media converter and the DAC plugged in to the CyberPower Sinewave UPS. NOTE: The UPS is plugged in to the BPT isolation transformer so that the UPS is isolated from the nasty utility power grid. I’ve notice a slight additional reduction in the noise floor. I also don’t have to worry about brown/black outs effecting my sensitive digital equipment any more. System is sounding just AWSOME!

[JohnSwenson]

I finally got mine up and running tonight and did some tests. It does what I expected:

 

if you just plug the UPS into the wall and plug the load into the UPS, it doesn't do anything!!! It is in bypass mode. The Pure Sine output inverter is turned off, it is NOT feeding the jacks on the back.

 

If you unplug the UPS plug, the inverter turns on being fed from the battery. I checked the output with both a scope and spectrum analyzer. My line is very noisy on both. With the cord unplugged the output noise floor went way down, but nowhere near "REALLY" clean. In addition there is a strong set of harmonics of 38KHz, which I presume is the switching frequency of the inverter.

 

So the noise floor got lower, but there are strong spikes from the switching frequency.

 

The AVR mode where the inverter is fed by the SMPS used to charge the battery will kick in when the voltage gets below 88V, I don't have a setup off the shelf that can do that to try out the AVR mode. It will take a little bit of setup to get to that.

 

 

So if this UPS makes things sound better when it is not running off battery, it is NOT because of the Pure Sine inverter, it's just the normal surge protector stuff and a little bit of filtering. (unless your AC input is less than 88V)

 

John S.

[elcorso]

 

 

So if this UPS makes things sound better when it is not running off battery, it is NOT because of the Pure Sine inverter, it's just the normal surge protector stuff and a little bit of filtering. (unless your AC input is less than 88V)

 

John S.

 

I have several UPS for all the digital gear (Mac Mini included & external hard drives, of course) but only looking for power failure protection and not for serious listening. Anyway I prefer to remove the filtering caps from the UPS, maybe good for a TV screen but no so for digital audio gear. The full audio gear system is under balanced transformer power filtering, then it's already filtered from the some times noisy power lines.

 

Roch

[Audioseduction]

My primary reason for the CyberPower unit for my digital frontend is for Uninterruptible Power when the utility grid is down. Other important reasons are Automatic Voltage Regulation, EMI/RFI Filters and being totally silent.

 

I experience no SQ degradation with the UPS in place. In fact the noise floor seem to have lowered a bit.

[Audioseduction]

(The Pure Sine Wave feature is only when operating on battery)

 

Quote from the CyberPower literature.

 

"Pure Sine Wave: When operating on battery, the PFC

Sinewave UPS outputs power with a pure sine wave that is

identical to or cleaner than the power from the utility company

grid, free of harmonic distortion and electrical noise,

resulting in optimal line clarity."