[zach915m]

 

[TheMiddleSky]

And I copy paste my response from the Susvara thread because I wholeheartedly disagree

I have the ha-3a which I only use for more sensitive cans. I tried it with my Susvara and the mids/highs are nice but it has poor control of bass-heavy songs.

Also just to add another counterpoint for other Susvara owners, from the Headfonia review:

If you’re used to listening to the Susvara from a powerful amp like the Envy or Headonia, then you will immediately notice what you’re missing here. There is enough power to make the Susvara sound loud enough but it’s not the best performing Susvara. In this combo it’s a bit slower, smoother and the clarity, speed, and precision here are not at the level they’re supposed to be. Bass also is the tightest or most defined and you can just overall feel the Susvara isn’t in control. You can listen to the combo if you like a fuller, smoother sounding Susvara but it’s not the technical king it’s supposed to be.

"Poor control" may subjective, which amp you think has good control for Susvara?

Of course, as much as I like Susvara and HA-3A pairing, I still fully agree with Headfonia assessment. Both Envy (around 6000 euro) and Headonia (around 8900 euro) are excellent tube amp, but did you now the price of HA-3A?

 

[Pashmeister]

"Poor control" may subjective, which amp you think has good control for Susvara?

Of course, as much as I like Susvara and HA-3A pairing, I still fully agree with Headfonia assessment. Both Envy (around 6000 euro) and Headonia (around 8900 euro) are excellent tube amp, but did you now the price of HA-3A?

I think in this case with ha-3a, poor control over Susvara bass was so glaringly obvious as it might actually be objectively measurable if I had the rig.

This is because when I listened to jennifer warnes’ “way down deep” in the ha-3a, the bass does not sound like it comes from one instrument as it should — the reverb goes around the soundstage and bouncing from one channel to another and then bloats and tightens. Unlistenable, and that’s just the first 10 seconds

A topping a90D which I dislike very much, has better bass control. Obviously more amps have better bass control but I thought to use an amp I dislike as an example to illustrate the point.

But I agree that ha-3a has beautiful mids and sweet highs with the Susvara if your playlist exclusively contains some mild acoustic and vocals.

Although as I said, the terrible bass with Susvara is so obvious I won’t even try to prove it or convince anyone as I am confident that anyone else will be able to instantly tell upon listening to a bass-y song.

 

[Cayin]

I think we (domiji and myself) can safely say that the HA-3A drive the HE1000V2 with ease and sounds great. That can also be confirmed by louisiana with his HE1000SE.

Thanks very much Daiyama for sharing with us about this. Really appreciated it.

 

[Louisiana]

In Germany, we say "Haben ist besser als brauchen!" (having is better than needing)

 

[heyguyslol]

In Germany, we say "Haben ist besser als brauchen!" (having is better than needing)

I also picked up a few backup 22DE4 when I ordered my 3A since they are the rare tubes for the amp. Although Cayin has said the power tube is expected to last 5-10 years but obviously that mileage is going to vary. I plan to pick up a few more once my rma has been resolved.

One of my tubes is slightly different than the stock tube that comes w/ the amp. Its the same RCA 22DE4 but its a coin-base. Can anyone explain the difference? Is there any advantage of one over the other?

EDIT: Correction, so the stock 3A tube is coin-based but the other RCA 22DE4 are not. Clarification on the differences would be great if anyone knows.

 

[doze off]

Can anyone help me to work this amplifier?

I don't have much experience, but I also understand the basics. The amplifier turns on all the lights, is connected via RCA (as in the photos) and 3.5mm cable straight to the motherboard behind the case.

Everything lights up, but nothing works. What more to do? It's tested via XLR and 4.4mm with the correct terminations of the amplifier, set up RCA too. But nothing works, no sound comes out. Before this HA-3A I had a Darkvoice 336SE and everything worked wonderfully, the installation is the same for both, only this HA-3A doesn't come out any sound.

I've already tested it with the other two fuses it comes with (T1AL250V and T125mA250V), and nothing works either. Here the electrical current is 110V. I do not know what else to do.

Detail: the 22DE4 rectifier tube seems to be the only one that works (because it heats up) the other two tubes 6V6 and 12AU7 are at normal temperature.

 

[heyguyslol]

Can anyone help me to work this amplifier?

I don't have much experience, but I also understand the basics. The amplifier turns on all the lights, is connected via RCA (as in the photos) and 3.5mm cable straight to the motherboard behind the case.

Everything lights up, but nothing works. What more to do? It's tested via XLR and 4.4mm with the correct terminations of the amplifier, set up RCA too. But nothing works, no sound comes out. Before this HA-3A I had a Darkvoice 336SE and everything worked wonderfully, the installation is the same for both, only this HA-3A doesn't come out any sound.

I've already tested it with the other two fuses it comes with (T1AL250V and T125mA250V), and nothing works either. Here the electrical current is 110V. I do not know what else to do.

Detail: the 22DE4 rectifier tube seems to be the only one that works (because it heats up) the other two tubes 6V6 and 12AU7 are at normal temperature.

Might try reseating/re-socketing the cold tubes. Seems odd for all four to be cold so it might be a long shot but still worth a try.

 

[doze off]

Might try reseating/re-socketing the cold tubes. Seems odd for all four to be cold so it might be a long shot but still worth a try.

I've tried taking all the tubes out and putting them back in, but nothing works.

There's no secret to this working, I've been racking my brains all morning and I'm about to give up. I've already tested with two different RCA cables, I don't know what else to do here.

 

[Daiyama]

Tubes/Valves are glowing?
VU meters are moving when playing music?

 

[doze off]

Tubes/Valves are glowing?
VU meters are moving when playing music?

As I already mentioned, only the 22DE4 tube glows and heats up, the others, nothing happens.
Everything lights up as in the photo, but no sound comes out. VU is locked because there is no sound.

I've used these two fuses to test what came with it, and nothing happens.

@Cayin can you help me with this?

 

[zach915m]

As I already mentioned, only the 22DE4 tube glows and heats up, the others, nothing happens.
Everything lights up as in the photo, but no sound comes out. VU is locked because there is no sound.

Seems like there is some disconnect between the Rectifier/power stage and the audio section. Hence why the fuses are not making a difference. I don't have a fix, but it's possible something became unsoldered in travel etc. I assume the amp is new and it wasn't working before?

 

[doze off]

Seems like there is some disconnect between the Rectifier/power stage and the audio section. Hence why the fuses are not making a difference. I don't have a fix, but it's possible something became unsoldered in travel etc. I assume the amp is new and it wasn't working before?

This is a real hypothesis. Bought from a Cayin distributor in Germany. This seller: https://www.audition6.de/

Product sealed and never used, I live in Brazil, it took 30 days to arrive in my hands. Now I don't know what else to do, if I contact the seller or try other solutions.

 

[Renexx]

Well it seems the heater of your 6v6 and 12au7 tubes are not working. Only thing you can do is check the fuses at the back of the amp. There are replacement fuses included in the package. Changing fuses is described in the manual.
If that doesn't help you can only send back the amp and exchange for a new unit.

 

[JazzVinyl]

This is a real hypothesis. Bought from a Cayin distributor in Germany. This seller: https://www.audition6.de/

Product sealed and never used, I live in Brazil, it took 30 days to arrive in my hands. Now I don't know what else to do, if I contact the seller or try other solutions.

Sympathies....have to agree with Zach, something probably got disconnected in all the traveling.

If you did not want to send it back...

A local TV repair place should be able to take a look and see why the audio tubes are not getting the required 6.3 volts to heat the tubes...

.