KOJO KM01-BRASS : With a (32Ω) 20mW +20 mW impression and appreciation thread
post-9747985
Post #16 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Ko Jo KM - 01 plus Fostex Th 900 :

Source : IPhone 4s
Dac : Venture Craft Go Dap DD1 LE with op amp Muse 02
Amp : Ko Jo KM - 01
Headphone : Fostex TH 900
Cable : Venture Craft Lod to USB
Venture Craft mini to mini LE



 
     Share This Post       
post-9748137
Post #17 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Another Variant from Ko Jo Amp KM 01 - TSUGARU cost 98700 Yen about 1100 Usd

The specification are the same , look like the different is only in finishing


http://www.fujiya-avic.jp/products/detail19631.html



 
     Share This Post       
post-9753966
Post #18 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
My Ko Jo KM - 01 with headphone set up :

Source : iPhone 4s
Amp : Ko Jo KM - 01
Headphone : Sennheiser HD 700 with after market from Japan
Ultrasone Sig Pro with Oyaide after market cable
Cable : diy USB to Lod Van Den Hul Tone Arm

SQ With this set up :
My IMO

Ultrasone Sig Pro has better SQ than Sennheiser HD 700

Ko Jo KM - 01 is very good for all iems
Like Um Miracle , Fit Ear MH 335 DW , Tralucent Audio 1+2
and
all Headphone with low Impedance
Like Ultrasone Sig Pro , Sig DJ , Grado HF2, Fostex TH 900

With high impedance headphone is only good , I feel has not enough power to drive high impedance headphone like
Sennheiser HD 700 , HD 800 and Ortho like LCD 2 , LCD 3



Source : IPhone 4s
Dac : Venture Craft Go Dap DD1 LE with op amp : Muse 02
Amp : Ko Jo KM - 01
Headphone : Sennheiser HD 700 with japan after marker Cable
Ultrasone Sig Pro with Oyaide after market cable

SQ :
With additional external idevice Dac Go Dap DD 1 LE op amp Muse 02
Improve the SQ significant

With high impedance now HD 700 SQ is very good
My Sig Pro is excellent now .

Has better detail, separation , soundstage , bass detail and bass impact



With 1 small AAA battery Ko Jo KM - 01 can last about 15 hours
 
     Share This Post       
post-9757096
Post #19 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Ko Jo KM - 01 plus AK 120 stock = excellent SQ

Source : AK 120 with WAV music file
Amp : Ko Jo KM - 01
Headphone : Ultrasone Sig DJ
Cable : Venture Craft LE mini to mini angle connectors

SQ :
This set up is one of the best SQ
High : very detail and smooth
Mid : very sweet , thick and clear like tube amp midrange
Bass : is also like tube sounding amp
Separation : very good that we can imagine the instrument placement
Soundstage : is not as wide like my Wagnus Epsilon S , for portable amp is
Wider than my Pico Power.

This is my IMO

 
     Share This Post       
post-9757273
Post #20 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Ko Jo KM 01 best DAP and DACs :

Source :
As DAP : AK 120
HDP R10

Dac for IDevice : Venture Craft Go Dap DD1 LE op amp Muse 02
Venture Craft Go Dap DD1 LE op amp SM 627


 
     Share This Post       
post-9759539
Post #21 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Ko Jo simple set Up For week End :

Source : Iphone 4s With all music file In WAV format
Amp : Ko Jo KM - 01 Brass Edition
Headphone : Audio Technica ESW 11 ltd
Cable : Van Den Hul Tone Arm Cable DIY Lod to USB

SQ : very sweet sounding set Up

 
     Share This Post       
post-9760757
Post #22 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
My personal impression :

The SQ from Ko Jo KM - 01
High : very smooth , detail , clear and clean high is not Harsh at all
Mid : very sweet midrange , thick and clean and Clear , Tube like midrange
Bass : is very good impact , but like Tube is not tight like solid State amp
Soundstage : you feel like In big studio recording , not like My Eagnus is very Wide and tall
Separation : very Good separation that you can detect the instrument placement very Easy .
Norse Floor : very Low norse Floor and black bacground

Overall : very sweet and intimate sounding Amp , that you can use For long Time listening , it is
Never make My Ears tired or fatigue.

Battery Life : single AAA
Can Last about 15 hours
I have tested With random songs from 10 am until next day 1 am about 15 hours
I use ultrasone Sig DJ as test
Volume is about 90 %

Minus : only one Ko Jo KM - 01 change the colour , because the casing made from
Solid Brass dye CNC and not treated again rust .

Suggestion : handle with care , wrap with soft cloth and anti slip mate.
Every time After exchange the battery please wipe with very soft cloth
For eye wear
 
     Share This Post       
post-9769659
Post #23 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
My Ko Jo KM - 01 with external dac IBasso DB2

Source : AK 120
Dac : IBasso DB2
Amp : Ko Jo KM- 01
Iem : UM. 3 DD
Cable : sys Concept Canada optical cable
Wagnus mini to mini

Sound Quality : high end portable iem set up

 
     Share This Post       
post-9769682
Post #25 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
My Fostex TH 900 with Ko Jo KM - 01

Source : AK 120
Dac : IBasso DB2
Amp : Ko Jo KM - 01
Headphone : Fostex TH 900
Cable : Venture Craft Audiophile grade mini to mini

Sound Quality :
High end SQ for night time listening. At home

 
     Share This Post       
post-9769692
Post #26 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
It is too bad that I have sold the ak120 because I love the look of this amp. Thanks for all the pics Rudi

You are welcome Michael

AK 120 > iBasso DB2 > Ko Jo KM - 01 + any items / UM 3 DD = high end sound quality
 
     Share This Post       
post-9769828
Post #28 of 281

rudi0504

Headphoneus Supremus
Joined
Jan 24, 2011
Messages
4,526
Reaction score
450
Joined
Jan 24, 2011
Posts
4,526
Likes
450
Yes but also 901 with balanced card with any iem : super sound :)

I wish that I can hear HM 901 at our local dealer around 20 September
With balance amp cost very expensive around 1200 Usd
 
     Share This Post       

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top