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SKU RS66LN-SW05

RS66LN |Rotosound Swing Bass 66 string set electric bass nickel wound 45-100

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string set electric bass nickel wound 45-100, standard gauge
045-065-080-100 long scale

The string that started a revolution and brought the bass player from the back line to the front.

This is the string that James How and John Entwistle perfected into what was to become the industry standard. The bright punchy high energy sound this string offered and so much a big part of early rock music as we know it, quickly grew in popularity to all four corners of the globe and remains the leading contender to this present day.

The John Entwistle connection 1966

“It was in 1966 and I was looking for that Danelectro sound again. I tried everybody’s strings but the E and the A’s just didn’t work. It was the same with Rotosound but there was something about them that was almost there but not quite. To solve the problem I got in touch with James How and told him his D and G strings were great but the E and A didn’t vibrate properly.

He told me to take my bass along to Rotosound and have some strings made until they got it right. After a couple of hours, we realised that the problem wasn’t in the wire winding, but in the core of the string. You could see that the strings vibrated in a big circle and that was wrong; the core needed to be thicker.

We also made the overall gauges a bit heavier and they sent me away with 12 sets to use. A couple of days later they called and asked if I objected to them putting my name to the strings and selling them commercially. I told them I didn’t mind as long as they kept me supplied with free strings!

But then we had to do the same with medium and short scale strings because I had loads of different basses by then. Those strings, the RS 66 sets, were the first that vibrated properly other than the Danelectros.”


The most popular Roundwound bass string ever. Rotosound was the first string company to produce this kind of string. Introduced in 1962 it changed the sound of the instrument instantly. The favourite string of many players including Billy Sheehan, John Paul Jones and Geddy Lee. The steel used to produce these strings is unique, combined with a highly secretive manufacturing process.

Shipping Pricing Guide

We expertly pack all of our items.

Standard Delivery for Small Parts & Accessories + Vinyl Records (2-3 Day) - £3.50

Standard Delivery for Small/Medium Items (3-5 Working Day) - £4.99

Standard Guitar & Amp Delivery (3-5 Working Day) - £9.99

Express Small/Medium Item Delivery (Next Working Day) - £9.99

Express Instrument & Amp Delivery (Next Working Day) - £14.99

Setup & Ship Service - £25.00 Professional setup service worth over £50! Lead times typically +2 days for this service.

There will be a small surcharge for parts of Scottish Highlands/Isles & Ireland, we will be in touch after you place your order. Or you ask us for a quote prior to ordering.

Dispatch Times

We aim to dispatch all orders SAME DAY WORKING DAY, if you place your order before 1PM. If your guitar requires setup work before shipping, please allow 1-2 days lead time.

International Shipping

Europe - Please contact us for a quote

USA Guitar Shipping £150-195 via UPS - (Please contact us for a quote)
USA Pedal Shipping £45 via UPS - (Please contact us for a quote)

Rest of World - Please contact us for a quote

Online Orders – 14-Day Returns (Distance Selling Regulations)
Customers who make a purchase online or via distance selling are entitled to return an item within 14 days of receipt, in accordance with the Consumer Contracts Regulations. Items must be in unused condition and returned with all original packaging and documentation.

  • Refunds will be issued to the original payment method once the item has been inspected and confirmed to be in resalable condition.
  • Return shipping is the responsibility of the customer unless the item is faulty or supplied in error.

In-Store Purchases
Items purchased in-store are not eligible for a refund. However, we do offer exchange or a store credit (gift card) for in-store purchases returned within 14 days, provided they are in their original condition with proof of purchase.

Exclusions
Please note that custom orders, modified items, B-stock, clearance items, and goods obtained through part exchange are non-refundable, unless faulty.

Partial Refunds
There are certain situations where only partial refunds may be granted, at our discretion. These include, but are not limited to:

  • Guitars returned with protective plastic film removed from pickguards or pickups.
  • Items showing signs of use or handling.
  • Missing or damaged original packaging, tags, or accessories.

All returns are inspected upon receipt. If a return does not meet the conditions above, we reserve the right to refuse it or issue a partial refund.

Founded in 2017 as a physical store, we pivoted to e-commerce during the pandemic. Serving customers throughout the UK, we maintain our traditional storefront while thriving in the online space. A guitar store created by and for guitar enthusiasts.