[New] KZ Guitar Works / Treble Booster [Yokohama Store]

At Geek in Box, we're dedicated to connecting musicians with their perfect instrument, no matter where they are. That’s why we’ve eliminated the barrier of shipping costs. We are thrilled to offer free and fast international shipping on all orders, to every country.

Even better, all prices shown on our site are final.
They include VAT, duties, and shipping fees—so there are no additional charges after purchase.

Our Commitment to Excellence:

Shipping from our home in Japan, we bring a level of care and precision to logistics that is second to none. With a track record of over 10,000 successful international deliveries, we have perfected the process.

Expert Packaging:
Your bass will be securely packed using durable, high-quality materials to ensure it arrives in flawless, ready-to-play condition.

Seamless Customs:
We expertly handle all necessary procedures for smooth customs clearance, preventing unnecessary delays.

We entrust your valuable order to the world's most reliable carriers, FedEx, ensuring your new instrument arrives safely and swiftly.

Shop our collection today and experience the confidence of knowing your dream bass is just a click away—with the shipping on us.

1. Our Total Satisfaction Promise

On Condition & Functionality: In the rare event that your instrument arrives in a condition different from our detailed description, or if it has any operational issues, we offer a 100% full refund. We will also arrange and cover the cost of return shipping.

On Personal Preference: Finding the perfect bass is a personal journey. If the instrument you receive isn't the right fit for your hands or your sound, you are welcome to return it. In this case, we will refund the full purchase price of the item; we simply ask that you cover the return shipping costs.

2. The GIB Buy-Back & Upgrade Program

We see our clients as partners in music. Your musical needs may evolve, and we want to support that journey. That's why we created a revolutionary program that protects your investment and makes it easy to upgrade.

Guaranteed Buy-Back: Should you ever decide to part with a bass purchased from us, we guarantee to buy it back.

Used Basses: We will repurchase at 70% of your original purchase price.

New Basses: We will repurchase at 50% of your original purchase price.

Your Upgrade Bonus: When you are ready for your next instrument, our program offers even more value. If you use our buy-back service to trade up to another bass in our collection, you will receive an additional 10% discount on your new purchase.

This unique program provides an unparalleled safety net, ensuring the lasting value of your instrument and creating a seamless, rewarding path for your evolution as a musician.