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Topic Options
#1231742 - 07/15/09 12:00 AM KAWAI EP-308, Yamaha CP-70
genemusic111 Offline
Full Member

Registered: 11/18/08
Posts: 42
Loc: L.A., CA
Hello! For all you tech-ies I have a question:

I was considering getting a Kawai Ep-308 electric grand which is like the Yamaha Cp-70. Would you guys know of any issues I might come across with the Ep-308? Any advice would be greatly appreciated.

love and music,


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#1231752 - 07/15/09 12:22 AM Re: KAWAI EP-308, Yamaha CP-70 [Re: genemusic111]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 23183
Loc: Oakland
I have never seen an EP-308, but I understand that they only have one string per note, rather than two like the CP series. This would make them more susceptible to losing all the strings on a given note, which can interrupt a performance.
Semipro Tech

#1231821 - 07/15/09 05:48 AM Re: KAWAI EP-308, Yamaha CP-70 [Re: BDB]
Gregor Offline
Full Member

Registered: 10/31/08
Posts: 446
Loc: Münster, Germany
Furthermore, the Kawai is not dismountable (as far I remember). The Yamaha can be dismounted in two parts for transport.

piano tech - tuner - dealer
Münster, Germany

#1231871 - 07/15/09 09:37 AM Re: KAWAI EP-308, Yamaha CP-70 [Re: Gregor]
Steve Jackson Online   content
500 Post Club Member

Registered: 03/02/07
Posts: 700
Loc: Zichron Yaacov, Israel

Well, Chris Stainton used to play the Kawai until he got
a Kurzweil. I think it has 2 strings per note, but not sure
about the dismounting part.
International sales of vintage Piano and restoration.
Exclusive Live Performance Player Systems Dealer


#1239812 - 07/29/09 04:46 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: Steve Jackson]
stuka Offline
Junior Member

Registered: 07/29/09
Posts: 5
Heya Genemusic,

I have *both* a Kawai EP-308M ("M" means with MIDI) and a Yammy CP-70. I'll be happy to answer any questions I can for you.

First, let me start by saying that the EP-308 is duplex-strung like the CP, not single-strung all the way up. There are other, upright models of Kawai Ep's that are single strung, but the 308 is double-strung. It sounds NICE.

If you are familiar with the CP, you know that it comes apart into two smaller (but still fairly heavy and bulky) parts for transport. The EP-308 does not do this, but can be pivoted on its base so that it stands upright, sort of taking up the same space as a smallish spinet piano.

You can download a user manual for the EP-308 (and see how this works)at:


If you get one of these pianos make sure to ask if it comes with the pedal and power supply. It's rather a pain to replace these, though it can be done, or worked around. A Yammy CP pedal can be used, but the rod is a different length and diameter, so a custom one would have to be made (a threaded rod and a matched sleeve of the proper lengths would suffice).

The base for the EP-308 has its wheels on a sort of trapezoidal pattern, rather than rectangular, and this will be a consideration if you gig with this piano, especially going up stairs and ramps and such. When I start gigging with this piano, I am going to make a base/skid for it, and probably dedicate a set of Rol-r-Kari's (great for moving Hammond organs and such) for it.

The sound is fantastic. Get thee quickly to these videos of Jeff Lorber playing one on YouTube:





Yes, that's Dave Koz on the sax as well. Nice hair. Heh.

Oh, and here's one of Jeff playing a CP-70, BTW:


Jeff is accessible via Email, BTW.

The power supply is 12V and uses the same Cannon XLR-2A-11C connector as the CP-70 does. For information on replacing teh power supply, or for building a back-up power supply (ALWAYS a good idea for any piece of musical equipment), go to this page:


There is a URL for a supplier that carries these connector plugs. I recommend that anyone owning a Yammy CP or Kawai EP have a couple extras, just in case they decide to quit making them. BTW I'm the "Matt" that he refers to, who provided the link to the supplier. The power supply itself is easy, the CP uses a 12V supply, and it has to be at least 250 mA, anything over 250 mA will work. I don't think you can find anything less than 250mA these days, but check it anyway to be sure. I am not sure of the amperage on the EP-308, but it should be about in the same ballpark, and it might say on the Kawai adapter, but if not, go high and you'll be safe. You only have to meet the minimum amperage requirement. The EP-308M I have uses a different, 24V power supply (because of the MIDI section), and mine came without the power supply (or the pedal, grrrr grrrr grrrr), and I used a 24V laptop power supply, with the Cannon XLR-2A-11C I got from onlinecomponents.com. The positive lead goes to the #2 terminal, and ground to #1, both of which are marked on the plastic front face of the plug.

Anyway, I recommend this piano over the CP-70 first and foremost because it has 88 keys! ;-) My brother (who lives in another state) just picked up a CP-80, and one day I hope to convince him to drag it up for a head-to-head shootout, though the fairer shootout for the EP-308M would be against a CP-80M.

Any more questions or discussion would be welcome, I do like this piano and I talking about this piano ;-)

#1239885 - 07/29/09 05:42 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: stuka]
stuka Offline
Junior Member

Registered: 07/29/09
Posts: 5
Oh, on the technical side, the Kawai EP-308, UNLIKE the Yammy CP-70, has a grand piano action that can be removed just like a regular acoustic grand piano's. The Yammy's is built into the case, rather than on a key frame like the Kawai and all acoustic grands. This is a very important difference for your piano tech or for you, if you will be learning how to *properly* tune, regulate, and repair your own piano.

I recommend that you have a professional piano technician tune the CP-70 and the EP-308. Because it doesn't use a thin soundboard like an acoustic piano does, and because of the inherent stability of the design, it will not require tuning as frequently as an acoustic piano would -- which would be on every change of venue, and in some venues every day. This is one of the original selling points of these pianos, along with their inherent portability and theh fact of being able to play the same piano with the same touch response and sound wherever you go. But tuning a piano is a lot more complicated and involved than it looks. It's *always* worth the money to have a qualified tech tune it.

Edited by stuka (07/29/09 05:43 PM)

#1241805 - 08/01/09 09:37 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: stuka]
stuka Offline
Junior Member

Registered: 07/29/09
Posts: 5
News Flash:

There is a Kawai EP-308 at auction today through August 5th on Ebay, it's Item # 170366478627 .

Lots of pics of this piano on the auction page, including pics of it folded up.

Edited by stuka (08/01/09 09:42 PM)

#1247642 - 08/12/09 12:06 AM Re: KAWAI EP-308, Yamaha CP-70 [Re: stuka]
Pacifist Offline
Junior Member

Registered: 08/04/09
Posts: 2
Loc: Edmonds, WA
First post. Woot!

Anyways... stuka this comment is mostly directed towards you because you own both pianos. I am looking to buy an electric-acoustic piano and would like to see which one sounds the best to my ears. I was wondering if there are any resources where the same song has been recorded through both pianos through a line out to a/b the sound? It would preferably be a dynamic performance.

If there aren't any, is it possible for you to record through both pianos and then post it on this thread for everyone to see? It would help immensely - i don;t think I've even heard the Kawai before...

Thanks a bunch,

Edit: If you guys have a Yamaha cp70, you can bypass some of the shittier circuitry components, and make it output with a "fuller" tone. Just follow this link: http://www.dempseyrecordmaking.com/wordpress/?p=274


Edited by Pacifist (08/12/09 12:12 AM)

#1250324 - 08/16/09 02:12 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: Pacifist]
FjellStalker Offline
Junior Member

Registered: 05/08/08
Posts: 5
Loc: Colorado
Originally Posted By: Pacifist

Edit: If you guys have a Yamaha cp70, you can bypass some of the shittier circuitry components, and make it output with a "fuller" tone. Just follow this link: http://www.dempseyrecordmaking.com/wordpress/?p=274


Do you have any more info on this or photos? It sounds really simple but I'd like to see it. thanks
Yamaha CP 70b
Kawai MP5

#1365541 - 02/04/10 12:13 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: FjellStalker]
Daniel Dempsey Offline
Junior Member

Registered: 01/31/10
Posts: 1
Loc: Hollywood, California
Hey guys, I've shut down the "dempseyrecordmaking" site, but have reposted the "CP-70 bypass mod" instructions on my blog here:


I don't have pictures or video right now unfortunately, (I'll document the next one I do), but it's a really simple process and I think my instructions are clear. Let me know if you have any questions.

Hope that helps!
"Spandex jackets, one for everyone. What a beautiful world this will be." -D.Fagen

#1374034 - 02/14/10 09:19 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: Daniel Dempsey]
Aaron M. Offline
Junior Member

Registered: 03/04/09
Posts: 15
Loc: Cincinnati, OH
hello guys and gals, I'm ready to purchase a kawai EP308 to replace my CP-70 as we are touring most of the year and the CP is becoming quite a pain to setup before each show and to tear down after. One EP308 I'm looking at is missing the pedal but comes with a road case at a great price. Should I steer clear of this one or buy it and try to find a pedal for it or fabricate my own? Thanks for your time,

Aaron M.

#1390729 - 03/07/10 08:04 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: Aaron M.]
Ben Garrett Offline
Junior Member

Registered: 03/07/10
Posts: 1
Loc: United States
Hey aaron-
I recently (November) chose a Kawai EP-308 for year long touring and got a really great place from Seale KeyWorks in Nashville...But it's March and I'm still trying to find a sustain pedal for it...although, i just recently started talking to a guy from http://vintagemusicparts.com/ ...and they usually specialize in Yamaha CP pedals...but he said he could absolutely make a custom made Kawai EP rod/pedal if I could get the specs to him.

....So, there is definitely hope for the Kawai. Btw, I was at your Nashville show last year for GMA and I saw the set up and everything for the Yamaha and I must say...the Kawai is so much more compact for a touring band.

Hope that helps!
Ben Garrett

#1429011 - 05/03/10 01:37 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: Ben Garrett]
ahchi Offline
Junior Member

Registered: 04/13/10
Posts: 6
Check My Kaiwa EP-308 on you tube and
CP-70 EP-308 side by side


Yamaha portable grand piano CP-70
Kawai portable grand piano EP-308
Kimball baby grand piano 5100

#1718311 - 07/21/11 08:43 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: genemusic111]
pudditorium Offline
Junior Member

Registered: 07/21/11
Posts: 1
Hello guys
i found out that kawai ep 308 in town but it does not have power supply
is there any way to figure out that problem?
any advice will be appreciated ! !

#1932076 - 07/25/12 12:33 AM Re: KAWAI EP-308, Yamaha CP-70 [Re: genemusic111]
Keegan Offline
Full Member

Registered: 05/22/09
Posts: 142
Loc: Canada (Ottawa, ON)
There is a Kawai EP-308 for sale in my area for $1500. I'm going to see it in the next few days. Do you guys think it's a good price assuming condition is good? (Apparently it has just been regulated as well)
Kawai CA-65, AKG K702, M-Audio Fast Track Pro
Pianoteq, VI Labs Ravenscroft
Macbook Pro 15-inch 2010

#2413128 - 04/23/15 01:06 PM Re: KAWAI EP-308, Yamaha CP-70 [Re: genemusic111]
willi Offline
Junior Member

Registered: 04/16/11
Posts: 4
Loc: Portland, Oregon
I recently acquired an EP-308 but unfortunately the electronics are not powering up. I have a 12v power supply and can verify the power reaches the board. I have a copy of the User Manual, but I can't find a copy of the Service Manual or schematic. Can anyone point to these documents?

Seems to be a great piano. Does anyone know if the pin block is solid hardwood or plywood, or if it is sealed/treated similar to the CP series pin block, etc?


Edited by willi (04/23/15 01:07 PM)


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