[rudi0504]

Thanks Rudi for showing us the creative way of using kojo amp as preamp. I spent an hour today using x3mod lo to kojo (max vol) po to my deskstop amp.. Adding a bit of kojo brass flavour to my hd650. Very fun and distortion free.
When set to max vol po, kojo has less power than x3 1.7V lo.
I will try to use with hm901 later.
AnakChan is right, the lo of hm901 is very powrful.. I think maybe full 2.0V

You are welcome
Ko Jo KM 01 is very good amp

 

[vincent215]

Rudi, can you comment on the sound of your new sony IEM?

 

[seeteeyou]

.

 

[rudi0504]

Rudi, can you comment on the sound of your new sony IEM?

My Sony hybrid XBA H 3 Sound Quality

Source : Sony Walkman WM ZX 1
Dac / Amp : Centrance Hi Fi M8
Iems : Sony XBA H 3
Cable : USB to USB A
Sony USB

High : very clear m clean and detail
Mid : natural and analog midrange , sound so full for iem like headphone
Bass : very Good bass detail and very deep bass impact
Separation : very good that you can hear the music placement in the right place
Soundstage : 3 D soundstage , sound like from out site your head

I love this set up for long listening

Minus : Sony XBA H 3 fitting is not so good and can not use for sleeping

IMO

 

[seeteeyou]

.

 

[rudi0504]

Quick question regarding 3.5mm coaxial connectors, are they always mono like the ones found on HM-801 and HDP-R10 or otherwise?

 

This coaxial cable is definitely mono

http://www.fujiya-avic.jp/products/detail20848.html

And there are adapters out there for converting 3.5mm mono to RCA mono

 

I have the same adapter like your in 3,5 mm mono to RCA mono for my ibasso Dac DB 2

Out site to in site :

Black color : Shunyata Ztrone coax cable
Blue Color : from Canada mono RCA to stereo mini 3,5 mm
Red white Color : Venture Craft mono RCA to mono RCA with jvc adapter 3,5 mm mono

 

[rudi0504]

Actually that's ONLY available directly from Neco's eBay store so please get that soon with the ADA4627 option as well as 3.5-mm headphone jack

http://www.ebay.co.uk/sch/neco_soundlab/m.html

http://www.ebay.co.uk/itm/V4-DUAL-MONO-portable-headphone-amplifier-/141139850761

Fantastic review of Neco V4 here

http://www.head-fi.org/t/513233/neco-soundlabs-portable-v-2-amp/225#post_9794740

Thank you for your information

 

[seeteeyou]

.

 

[rudi0504]

No problem, we should all thank you for introducing us to your way of adding preamp.

There's yet another interesting portable amp with very powerful output and a nice match for the ODAC

http://www.head-fi.org/t/648574/portaphile-appreciation-thread/120#post_9665747

http://portaphile.com/shop/portaphile-627x/

I have heard portaphile 627 and 627 x
As pre amp Ko Jo KM 01 is the best now

IMO

 

[rudi0504]

I want share two pictures that use Ko Jo KM01 as pre amp

Ak 100 + Ko Jo KM 01 +



White color is battery power charger

Ak 100 as pure transport + ibasso dac db2 + Ko Jo KM 01 + ALO international

 

[seeteeyou]

.

 

[angelsblood]

 
Wow Rudi! beast of a stack! Big mac of all burgers!
 
Do you set the kojo volume to max when using as preamp?

 

[rudi0504]

Wow Rudi! beast of a stack! Big mac of all burgers!

Do you set the kojo volume to max when using as preamp?

Thank you
Yes I set the volume from Ko Jo to max as pre amp

 

[rudi0504]

Great, we'll look forward to your comparison between the powerful Neco V4 and KM01-BRASS then.

There's another super crazy high power amp card for HM-901/HM-801 to be available in 2014 and that should be called U235 card with whopping 6V output

http://www.erji.net/read.php?tid=1433688

How do we actually know whether that's too much power to damage another amp's input or not?

Besides, is triple-amping causing any potential problems?

HM-901 headphone amp card > KM01-BRASS > ALO The International

About your question I will answer by tomorrow

I am sorry , I have not tried your dsd music file to drive my abyss

 

[lee730]

Rudi do yourself a favor and audition or get an AK120-S. It is just sick .