knobloch erithacus bi medium

Designed for musicians wanting to use organic materials, for a natural treble sound over a rounded bass.

  • The roundness of the bass sound matches the refined and natural sound of the BIO trebles
  • These strings are perfect for guitarists looking to eliminate any hint of that plasticy sound that can come from standard Nylon strings.
  • The inclusion of the BIO trebles in this set results in a pure, natural and rounded sound.

Treble Strings

BIO Nylon: Natural – Refined

Bass Strings

ER Double Silver: Natural – Round

The ERITHACUS Line is created for guitarists who need a natural, warm and round sound with impeccable intonation, durability, and great playability.

These strings are versatile and even warmer than the original Actives line.

£16.63

In stock

More Information

Brand

Model

String Tension

Medium Tension

Our Customers

“I just wanted to thank you again for you time, knowledge and advice last Saturday.  It really is much appreciated and helped make a big purchase for me a lot easier (or at least less stressful!)”

Mat Woolrich, CGA Customer

“Classical Guitar Academy is pure class! I received this superb guitar, hard case & accessories very quickly and in really secure packaging. If you’re looking for excellent quality products and customer service, then look no further than CGA.”

David Lees, CGA Customer

“Excellent customer service. Appointment service giving you the opportunity to try out range of quality classical guitars with no pressure. Highly recommended!”

Catherine Evans, CGA Customer

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Endorsements and Happy Customers

“I taught Ed Peczek (Director of Classical Guitar Academy) whilst he was a student at the Royal Conservatoire of Scotland. He is a fine musician and guitarist with a keen musical insight. Ed is a young man of real integrity who will offer unbiased advice on purchasing a quality instrument. I can think of no one better equipped to direct a centre such as Classical Guitar Academy.”

Phillip Thorne, MBE

Senior Lecturer, Royal Conservatoire of Scotland (1978-2016)

“Excellent guitar and very good service. Highly recommended!”

Joe Scarffe

Classical Guitar Academy Customer

“We were looking for a guitar for our son but had no idea where to start based on the level he’s working at/age etc. I contacted Classical Guitar Academy for some initial advice and received a detailed email response. More questions followed from our side and Ed took the time to give his thoughts and opinions. Once the order was placed we were kept very much in the loop about expected delivery times. On collection of the guitar, Ed spent time with us and our son had the chance to play a couple of guitars and make an informed final choice! Can highly recommend Classical Guitar Academy for non-pushy, knowledgeable advice with regards to the purchase of a high quality guitar. Local independent seller providing an excellent service – can highly recommend!”

Jo Lloyd

Classical Guitar Academy Customer

“Classical Guitar Academy is pure class! I received this superb guitar, hard case & accessories very quickly and in really secure packaging. If you’re looking for excellent quality products and customer service, then look no further than CGA.”

David Lees

Classical Guitar Academy Customer

“Just received an Amalio Burguet 2M by mail. Arrived, beautifully packed, in superb condition. After tuning had my first acquaintance with it. Lovely tone which I am sure will improve with playing time. Turned the instrument over in my hands for close inspection. First-rate construction under superb high-gloss finish. Thanks for swift supply & responses via email.”

Roger Watts

Classical Guitar Academy Customer

“Been playing guitar since I was 15 (am now 59), bought my first classical guitar in 1985 and recently decided I needed a better one. After some discussion with Ed at the Classical Guitar Academy about all things guitaristic (Ed is very knowledgeable and always enthusiastic) I tried a few of the guitars Ed had in stock. I knew what I was looking for and Ed understood what I was looking for and I have ended up with a superb Antonio Sanchez guitar. I had also tried a few guitars in a few of the mainstream shops but did not get anything like the help and advice I got from Ed – he understands what it’s all about!”

Duncan Adamson

Classical Guitar Academy Customer

“Excellent customer service. Appointment service giving you the opportunity to try out range of quality classical guitars with no pressure. Highly recommended!”

Catherine Evans

Classical Guitar Academy Customer