Cayin C9: Dual Nutube, Fully Balanced Class A/AB Portable HeadAmp

[WDitters]

When you connect a DAP to C9 in preamp mode, the volume control of C9 will be disabled, you can only control the volume via your DAP.

Hi Andy, will it be disabled as in "remaining in the signal path but in neutral state" or disabled as in "bypassed"?

 

[Andykong]

Hi Anyd, will it be disabled as in "remaining in the signal path but in neutral state" or disabled as in "bypassed"?

former, we didn't create a dedicated signal path for Pre-amp input. There isn't enough space to facilitate a redundant signal path. The as-is circuitry complexity of C9 is already a big nightmare for analog engineering.

 

[bukumurah]

And it arrived... That was an easy and very worthwhile upgrade... The hum has gone and there's a very audible upgrade in SQ as bonus.. And build quality is stellar...

Which FiiO cable model is that if I may ask? Since I also have an issue with the humming.. Thanks in advance!

 

[WDitters]

Which FiiO cable model is that if I may ask? Since I also have an issue with the humming.. Thanks in advance!

Apologies .. That should have read iFi cable (corrected it now)

https://ifi-audio.com/products/4-4mm-to-4-4mm-cable/

 

[WDitters]

Out of curiosity, does anyone know whether these battery duration indications are based on Line or PRE-Amp usage? I was wondering since in PRE-Amp mode the C9 operates at full power whereas in Line mode the C9 output is variable, correct?

 

[Andykong]

Out of curiosity, does anyone know whether these battery duration indications are based on Line or PRE-Amp usage? I was wondering since in PRE-Amp mode the C9 operates at full power whereas in Line mode the C9 output is variable, correct?

Line level signal.
We have state the testing condition in the original C9 specification, please refer to the opening post of this thread.

 

[WDitters]

Line level signal.
We have state the testing condition in the original C9 specification, please refer to the opening post of this thread.

Completely overlooked that .. Thanks @Andykong !!

I was wondering because I seem to be getting ultrashort charge times (to full, way shorter than 3h, Anker PD Atom 4 charger) and yet almost equal run times (Class A / Tube in PRE mode, Batteries used ORB3500)

So the specs in the table (for me) seemed conservative

Correction: Better run times even

 

[WDitters]

It's one that has been mentioned a few times on this thread. I got mine from Amazon Japan, but probably there's a local equivalent.

https://www.amazon.co.jp/gp/aw/d/B07NDRD2PT/ref=ppx_yo_mob_b_inactive_ship_o3_img?ie=UTF8&psc=1

That rack is currently not available. Would anyone know another source where to get this rack? Or a similar alternative?

 

[NJoyzAudio]

That rack is currently not available. Would anyone know another source where to get this rack? Or a similar alternative?

WDitters

Amazon US has something similar here
https://www.amazon.com/dp/B0BCYLF3HD?psc=1&ref=ppx_yo2ov_dt_b_product_details
Also APOS in the US sells 2 different ones from topping and Xduoo
https://apos.audio/products/topping-acrylic-rack?_pos=1&_sid=110349b8b&_ss=r
https://apos.audio/products/xduoo-x-r01?_pos=2&_sid=110349b8b&_ss=r

See your outside of the US but hope this information will help you

 

[tomfox]

That rack is currently not available. Would anyone know another source where to get this rack? Or a similar alternative?

wat dacht je van:

https://www.hifistudio79.nl/product/opping-rack-hifi-rack-aluminium-acrylic-for-pa3-mx3-vx3-d30-a30/

 

[WDitters]

wat dacht je van:

https://www.hifistudio79.nl/product/opping-rack-hifi-rack-aluminium-acrylic-for-pa3-mx3-vx3-d30-a30/

Thx... But way too big. The Amazon one fits the C9 like a glove. The topping one is somewhat too large (wide especially)

 

[WDitters]

WDitters

Amazon US has something similar here
https://www.amazon.com/dp/B0BCYLF3HD?psc=1&ref=ppx_yo2ov_dt_b_product_details
Also APOS in the US sells 2 different ones from topping and Xduoo
https://apos.audio/products/topping-acrylic-rack?_pos=1&_sid=110349b8b&_ss=r
https://apos.audio/products/xduoo-x-r01?_pos=2&_sid=110349b8b&_ss=r

See your outside of the US but hope this information will help you

Thanks. The KGUSS comes a bit closer, and another KGUSS model indeed already made it to the backup list . But ideally I would like to have a fit as snug as the NFJ one on Amazon.jp

 

[m3lover1]

Anyone tried both the ibasso dx320 paired with c9, and the n7 paired with the c9? If so any comparisons/which one you prefer?

 

[WDitters]

It's one that has been mentioned a few times on this thread. I got mine from Amazon Japan, but probably there's a local equivalent.

https://www.amazon.co.jp/gp/aw/d/B07NDRD2PT/ref=ppx_yo_mob_b_inactive_ship_o3_img?ie=UTF8&psc=1

Took some serious searching and mailing but finally found one on Zenplus https://zenplus.jp/en/acrylic-petit.../mmstore:06cda24b-2a02-4ffb-88f2-ef6051ccd4c7

 

[WDitters]

@Andykong Today my C9 power button refuses to stay activated. When I press it, it lights up, I hear the click of the amp and the light stops blinking. But despite of the click and the light staying on, the C9 switches off again when I let go of the button. Batteries are full.

When I keep the C9 power button pressed the amp works fine, both in Line and in Pre mode, Nutubes also power on correctly. Yet the power button does not want to stay active. It that somehow the protective mode of the battery module interfering?