Roland GR-55 Normal-Guitar P7 & P5 (Safe) adapter cable 

Hi, You will have access to normal-guitar tones and effects, but only monophonic Pin 5 GR-55 synth voices (no poly). A Boss tuner will make an excellent guitar buffer. separate-strings.co.uk

Hi, No problem leaving out P5. It was only added because a few people asked about it. Alternatively, you can switch off P5 or P7 in a patch. Regards, Bill separate-strings.co.uk

Hi, If you want to make the cable, check out the v-guitar forums and search for 'phantom power' pin 8. You will find the basic P8 volume resistor network schematic (thanks to Steve Conrad btw). The circuit delivers approximately 5VDC to GR-55 P8 'volume level. Next is P7 normal guitar input, using a standard well-screened guitar cable. Conductor goes to P7 and cable screen to DIN shell. For a monophonic GR-55 synth voice, connect a 100 ohms resistor from P7 to P5. The resistor offers a basic buffer between P7 & P5. P5 'String A' has the widest GR-55 note recognition of all string signal inputs. The cable is available for purchase at £30.00GBP, plus shipping. The two hidden advantages with using the adapter cable input, is external user buffer pedal choice, and a clean input path to the GR-55's A-D. In tests, the GR-55 harmonic distortion is much lower compared to a Boss GP-10 or a GT1 pedal. And of course the signal-to-noise ratio (with a hi-end external buffer circuit) can register a -100dB noise-floor. Optional hi-end DIY guitar buffer circuit schematic. www.separate-strings.co.uk/bufferschematic.png

Man, you are the BEST, Thank you!@@BaxBreakoutBox

Hi, You can order the cable from me direct at separate-strings.co.uk The name is 'GR-55 P7/P5 adapter cable'. Regards, Bill.

Hi miguelamirelessr8645, If the GR33 has a normal-guitar P7 input from a GK3 type preamp/pickup, the adapter cable will work as claimed here. I am not familiar with the GR33 btw.

Hi, Sorry, due to small business red tape Brexit rules, shipping to EU is not worth it. What a stupid government we have in the UK. Regards, Bill

Hi, GR-55 guitar emulations (strat, Les Paul etc) are not available with the cable, but guitar effects are available with a normal-guitar adapter cable input. The normal-guitar input audio improvement is noticeable, compared to a Boss GP-10 & GT1 multi-effects guitar input. A technical explanation is mentioned in an earlier post. The cable is available for purchase at £30.00GBP. Thanks Bill, www.separate-strings.co.uk

Battery power will improve GR-55's noise-floor by at least 2-3dB. Good comment.

I cannot ship to the Philippines, but you can make one for yourself. Go here christopher-j.net/roland-gk-13-pin-to-%C2%BC-inch-guitar-cable-adapter/ The person shows the basic connections for the adapter cable. P5 PCM triggers need a 100ohms resistor between P7 to P5. There is more on the Facebook GR55 page. Do have a look. Btw, Do not follow those videos with people connecting -7VDC to ground shield. They are totally stupid and dangerous. Thanks, Bill

Hi, It will work with an electric violin, but string inputs must be single string or mono to trigger GR-55 PCM sounds. Adapter cable access to Pin-7 normal-guitar turns the GR-55 into a high quality effects unit. Cable price is £30.00GBP. Thanks, Bill separate-strings.co.uk

Hi Joseph, Sorry for the late reply. No problem supplying the GR55 adapter cable. Email me at the separate-strings.co.uk website to get the order going. Thanks, Bill

Hi I_ffoo, Do not see a problem with UK-Saudi Arabia shipping, need to check. Yes, you can play all the GR55 PCM sounds using a normal guitar input, BUT you can only input a single string guitar input or a mono input. The main attraction with the cable, is using a GR55 as a normal guitar effects unit. Btw, the GR55 has the cleanest of all Roland/Boss v-guitar normal-guitar inputs, and that's why I am so enthusiastic about the cable. Regards, Bill separate-strings.co.uk

How can I order this cable? I want two, and the cable length is one meter for each cable

@@I_ffoo Hi, Having just checked, shipping to Saudi has risks. Last month I gave instructions on the cable... "Hi, If you want to make the cable, check out the v-guitar forums and search for 'phantom power' pin 8. You will find the basic P8 volume resistor network schematic (thanks to Steve Conrad btw). The circuit delivers approximately 5VDC to GR-55 P8 'volume level. Next is P7 normal guitar input, using a standard well-screened guitar cable. Conductor goes to P7 and cable screen to DIN shell. For a monophonic GR-55 synth voice, connect a 100 ohms resistor from P7 to P5. The resistor offers a basic buffer between P7 & P5. P5 'String A' has the widest GR-55 note recognition of all string signal inputs. The cable is available for purchase at £30.00GBP, plus shipping. The two hidden advantages with using the adapter cable input, is external user buffer pedal choice, and a clean input path to the GR-55's A-D. In tests, the GR-55 harmonic distortion is much lower compared to a Boss GP-10 or a GT1 pedal. And of course the signal-to-noise ratio (with a hi-end external buffer circuit) can register a -100dB noise-floor. Optional hi-end DIY guitar buffer circuit schematic. www.separate-strings.co.uk/bufferschematic.png

As far as I know, it's only available from myself. Making one is easy when you know how. Visit the v-guitar forums. DO NOT make one from instructions shown here on youtube, as some are suggesting a voltage pin goes to ground:( separate-strings.co.uk

Hi, It appears I am the only outlet for the cable, and it's priced at £30.00GBP. Where are you based? You can email at separate-strings.co.uk Thank you, Bill

Sorry, Brexit export rules have damaged small businesses like mine. The cable is quite simple to make, why not have a go? I posted instructions in a message a couple of weeks back.

Thank you for your response.👍🎸

Hi, Where are you based? The GR-55 adapter cable is priced at £30.00GBP, with postage on top. Regards, Bill. separate-strings.co.uk

Hi, The cable is priced at £30.00GBP. Tracked and signed shipping to Singapore I need to check. Maybe £15.00GBP. If you are serious, visit the website separate-strings.co.uk and we can start an email chat. Thanks, Bill

@@BaxBreakoutBox awesome! Just another question, how’s the piano tracking? Is it good with this cable?

@@melodycentral7883GR-55 piano tracking is terrrible, everybody knows that. Also P5 is only mono, so you cannot play more than a single string. GR-55 tracking is ok with strings and pads, but forget articulated instruments. P7 GR-55 normal guitar is excellent with a buffer pedal.

Hi, The cable provides a direct input to GR-55 pin-7 normal-guitar, without any case drilling or modification etc. P5 is also included and allows simple GR-55 PCM mono voice trigger from a normal-guitar input. Thanks, Bill. separate-strings.co.uk

Hi, If you are based in the EU, you are out of luck due to Brexit red tape. If elsewhere, you can email me at separate-strings.co.uk. Regards, Bill

@@BaxBreakoutBox sad ....im in france

@@thierryolimac4403 Hi Thierry, Not to worry, if you have or anyone you know has good soldering skills, the cable is quite easy to make. Send me an email, and I will try to help out. Also, here is the reason why the GR-55 has an excellent normal-guitar input. separate-strings.co.uk/gr55adpath.jpg Sorry about stupid Brexit. Regards, Bill separate-strings.co.uk

Hi, Where are you based?

Croatia, Hrvatska

Hrvatska, Croatia

@@user-lx7qt3xn1lHi, I cannot ship to the EU due to Brexit export rules. The cable is fairly easy to make and posted some instruction in an earlier message here. Thanks for asking, Bill separate-strings.co.uk