Singxer SA-1 / Balanced Amplifier Fully Discrete Class A - beyond THX 888 ?!

[Lolito]

Mine 2 weeks old now, always on, did not burned in anything, just left it always on. This thing really sounds well and pleasant. I like to eq a bit the HD6xx, give it some bass kick, but with this amp i can also enjoy it so much with no eq, the xumb is still there. Now I just need an affordable bassy cans, that I am missing. Audeze LCD 2C or DT 1770pro are my candidates, or sundaras, or...

 

[Middy]

@Lolito Sorry i cant give you a can suggestion. My Ethers dont do deep Bass or affordable ☹.
As your 2 weeks in 320 hours.. ish.
Did you notice any burn in, i know others may have but i am always interested what people think..

 

[nekky]

@Lolito Sorry i cant give you a can suggestion. My Ethers dont do deep Bass or affordable ☹.
As your 2 weeks in 320 hours.. ish.
Did you notice any burn in, i know others may have but i am always interested what people think..

There was burn in for me for certain. I think most will agree.

 

[nekky]

Mine 2 weeks old now, always on, did not burned in anything, just left it always on. This thing really sounds well and pleasant. I like to eq a bit the HD6xx, give it some bass kick, but with this amp i can also enjoy it so much with no eq, the xumb is still there. Now I just need an affordable bassy cans, that I am missing. Audeze LCD 2C or DT 1770pro are my candidates, or sundaras, or...

I would look at the LCD 2C as long as you’re ok with something heavy. Just got my LCD-XC and they sound great.

 

[Lolito]

@Lolito Sorry i cant give you a can suggestion. My Ethers dont do deep Bass or affordable ☹.
As your 2 weeks in 320 hours.. ish.
Did you notice any burn in, i know others may have but i am always interested what people think..

I can tell you what I felt, if it's real or it's my head, or my ears getting used, I really don't know, but I noticed that they now sound better, at the beginning i noticed it lacked detail compared to jds atom, and background felt not so black, not it changed, feels like a clean black background, sounds like a bit louder, never needed to go high gain really, low gain and single ended can blow my ears already. Bass is there but from first day, i also notice maybe jds atom when playing loud as pre amp, it get a bit sharper on the highs when loud, not here.

I do not enjoy that much that logarithmic pot in low gain i must say, I´m always at 3 to 6 when enjoying music, and there you have to be precise with the finger or you get blown, LOL. The knob with molted surface definitely a must for this amp.

I also noted once when playing sound from cold, sounds a bit harsh, as to be warm to play well and smooth. Tested it with blon 03 iems the other day, all god. 30$ iems, sounds like crap to be honest, but that was the expected. Very sibilant sound compared to a proper hd6xx headphones. Expected.

 

[Lolito]

dc mod, I would like to know what the risks are and what the benefits are. my dac psu is 5V, not sure how that can create any damage, but I know nothing john snow.

 

[Middy]

@Lolito Thank you thats fantastic. Thermal stability is always better in a lot of amps than from cold. There are a few big capacitors in there that form quickly but do seem to take time to settle.. and get use to the sound. ( old arguments).
If i followed the test correctly, i got no change from measuring the RCA out.
I measured a low 5V DC power supply just to make sure i was doing it right.
Then turned it down and measured the RCA. All seemed good no Volts.. But trying old headphones seems sensible.

I am impatient and will probably try the fuse and DC mod before the burn in period...

I keep my reviews simple now... is it different to what i have and do i like it.

Subjective is the largest part of enjoying this hobby, Headfi wouldn't exist and be one giant graph... or ASR without the snark lol .
Its all part of the experience, like life..

Silly fact... the pattern diamond or otherwise is called knurling on the volume knobs. And more knobs here than a pornhub search...
Anyone trained on a lathe has done this and shown thier mum.... Their Knurling that is...

"Knurling - Wikipedia" https://en.m.wikipedia.org/wiki/Knurling

Keep smiling
Dave

 

[Muataz]

dc mod, I would like to know what the risks are and what the benefits are. my dac psu is 5V, not sure how that can create any damage, but I know nothing john snow.

Your DAC E30 is well engineer and I think no risk

 

[nekky]

@Lolito Thank you thats fantastic. Thermal stability is always better in a lot of amps than from cold. There are a few big capacitors in there that form quickly but do seem to take time to settle.. and get use to the sound. ( old arguments).
If i followed the test correctly, i got no change from measuring the RCA out.
I measured a low 5V DC power supply just to make sure i was doing it right.
Then turned it down and measured the RCA. All seemed good no Volts.. But trying old headphones seems sensible.

I am impatient and will probably try the fuse and DC mod before the burn in period...

I keep my reviews simple now... is it different to what i have and do i like it.

Subjective is the largest part of enjoying this hobby, Headfi wouldn't exist and be one giant graph... or ASR without the snark lol .
Its all part of the experience, like life..

Silly fact... the pattern diamond or otherwise is called knurling on the volume knobs. And more knobs here than a pornhub search...
Anyone trained on a lathe has done this and shown thier mum.... Their Knurling that is...

"Knurling - Wikipedia" https://en.m.wikipedia.org/wiki/Knurling

Keep smiling
Dave

I know knurling from the car biz but rarely use the word as no one knows what it is.. but my knurled knob is on way

 

[Middy]

I may order one a couple look ok and as people said the one supplied is awful and in need of finer control.
I am sure someone mentioned issues with the back.. try lapping it.

An old mirror...wet and dry paper..

Wet mirror place wet and dry sand paper. Wet top of sand paper. Place on middle and do a figure of eight pattern rubbing down the back face until flat of desired size.. you could also find some thin plastic draw around the 2 holes and cut it out then glue on the back as a low friction washer.

If the hole is to big for the spindle then tin foil a couple of wraps can help centralize it better... or more..

Not that you need this level but the basics if your volume knob is rough..

"How to Lap a Heatsink Guide - Overclockers Club" https://www.overclockersclub.com/guides/lapping/

 

[sparkfuzz]

I can tell you what I felt, if it's real or it's my head, or my ears getting used, I really don't know, but I noticed that they now sound better, at the beginning i noticed it lacked detail compared to jds atom, and background felt not so black, not it changed, feels like a clean black background, sounds like a bit louder, never needed to go high gain really, low gain and single ended can blow my ears already. Bass is there but from first day, i also notice maybe jds atom when playing loud as pre amp, it get a bit sharper on the highs when loud, not here.

I do not enjoy that much that logarithmic pot in low gain i must say, I´m always at 3 to 6 when enjoying music, and there you have to be precise with the finger or you get blown, LOL. The knob with molted surface definitely a must for this amp.

I also noted once when playing sound from cold, sounds a bit harsh, as to be warm to play well and smooth. Tested it with blon 03 iems the other day, all god. 30$ iems, sounds like crap to be honest, but that was the expected. Very sibilant sound compared to a proper hd6xx headphones. Expected.

I agree and have noticed from 3:00 to 6:00 there's definitely an exponential increase in the sound you got to be careful

 

[sparkfuzz]

One thing I will say is the volume knob is firm when you turn it but I actually prefer this. I have no problems slowly turning the knob to get the volume I desire, especially with the three to six exponential increase in sound

 

[quawn0418]

I agree and have noticed from 3:00 to 6:00 there's definitely an exponential increase in the sound you got to be careful

Up until 3 o clock allows for really precise volumes, we have to remember that most cans aren’t that hard to drive, so a lot of people won’t need 3 o clock, I can understand why they went that route

 

[Lolito]

Your DAC E30 is well engineer and I think no risk

Topping is not well engineer. In fact, in the first units the polarity was inverted, it was flipped. The opposite of good engineering. It is good price and good sound for the price, but...

 

[domiji]

Topping is not well engineer. In fact, in the first units the polarity was inverted, it was flipped. The opposite of good engineering. It is good price and good sound for the price, but...

If you may have a multimeter you can mesaure the DC output of the E30.