Synergy X7 Super Treble Black

Joshua had been dreaming about getting a harp guitar for a long time so he approached us to build him this custom version with eight super trebles. It’s a tight fit to squeeze eight super trebles onto the Synergy X7 body, but we were able to extend the custom moulding to accept the eight tuners and we created an extra horn on the lower portion of the body to act as a leg support. The Synergy is a fantastic instrument for custom builds.
  • CLIENT Joshua (Malaysia)
  • WE DID Super Treble

Alistair went the extra mile in recording himself playing on it and recording it on YouTube, sending the private link to me. I was really pleased with what I saw, heard and even had an extra bonus - Alistair built seven sub-basses, where the harp guitars Joshua has only have six. The only difficult choice I had to make was to decide which colour! All I can say is, I have found my perfect guitar! Thank you Alistair!

Scale length: 24″/610mm
Sub bass scales: D – 26 ¾”/680mm, C – 27 ¾”/705mm, B – 28 ¾”/730mm, A – 29 ½”/750mm, G – 30¼”/770mm, F – 31”/785mm
Nut width: 1 ¾”/44.5mm
Bridge spacing (Guitar Neck): 2 ¼”/57mm
Overall length: 37 ½”/950mm
Max body width: 13 ½”/335mm
Max body depth: 4 ¼”/110mm
Max body length: 16 ½”/420mm
Weight: 5 ½lbs/2.5kg
Frets: 20 medium stainless steel frets
Tuners: Gotoh 510 tuners 18:1 ratio (chrome)
Nut/Saddle: Graphtech low friction nut and saddle
Bridge: Graphtech bridge pins with Paua shell inlay
Pickup: B-Band A2 stereo undersaddle pickup and preamp
Colour: Black
Finish: High gloss finish on all surfaces
Case: Custom-padded Emerald gig bag

our working processin 3 steps

We are always happy to advise you on the many custom possibilities available here at Emerald Custom Shop, so feel free to contact us any time!

browse & be inspired

Browse through the Emerald Custom Shop Portfolio and see all the possibilities and choose the Custom Shop options you would like on your instrument.

contact & develop

Send the Emerald Guitars team a custom shop query who in turn give you a quote and subsequently will advise you in finalising your Emerald Custom Shop instrument.

place your order

Once your dream instrument is finalised, your order will be processed and then all that’s left to do is wait for the Emerald Custom Shop team to complete your built-to-order instrument.


One Off Custom Guitars. Get a unique instrument for your collection, designed by Luthier Alistair Hay.