SBooster Ultra MKII
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Shipping Information
Free shipping on orders over 1000:- (within Sweden)
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Easy Returns
Return within 14 days of delivery

SBooster Ultra MKII
- The innovative electronic design filters and optimizes the input power and is fine-tuned within the audible range.
- The Ultra MKII circuit uses upgraded input and output buffers with higher capacity and solid conductive polymer capacitors to reduce output ripple and expand the bandwidth of the filter circuit.
- The transient response has improved by 40-50% compared to the Ultra MKI by adding new components and reducing the output impedance to a minimum.
- The output circuit is now equipped with an impedance correction filter to achieve improved performance over a wider bandwidth.
- "Sbooster Decoy": We all love having our audio devices in metal enclosures, but... a lot of sound also comes from the radiation of the used electronic components, which cannot escape from the metal enclosure and continue to bounce around inside. How can you eliminate this noise? With the help of Sbooster's innovative "Sbooster Decoy" that lures the unwanted sound out of the metal enclosure.
- Star-ground-design: Ultra MKII is a star-ground design. Almost every component has its own ground connection. This makes the electronic construction more stable and provides a pleasant feeling in the music.
- Newly designed input and output cables: The cables on the Ultra MKII have only one purpose: to transfer all the benefits of the BOTW P&P ECO and Ultra MKII design without any form of interference on the audio device. The input and output cables feature high-quality oxygen-free copper in the conductors and are double-shielded. The interchangeable DC connectors are equipped with custom-made gold-plated contact pins.

If you shop for more than €150, we will ship free of charge!
If ordered before 3pm on weekdays, we will ship the same day, provided the item is in stock. Normal delivery time is 1-5 working days, but in case of high order intake or ordering of certain products, delivery may take longer. Should any of the goods you ordered be out of stock, we will notify you as soon as possible.
We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 14 days of delivery. When exchanging or purchasing a new item in connection with a return, we offer the return shipping.
What does our stock status mean?
- In stock - Shipped immediately the same day if order is received before 3pm (weekdays)
- 3-8 days - Available in stock at supplier and ordered home immediately
- 4-12 days - Available in stock at supplier and ordered home immediately
We offer a guarantee of at least 2 years for all products, and some goods are covered by an extended guarantee of up to 5 years. This way you avoid costly insurances and can be safe as a customer. If there is a problem during the warranty period, please contact us, and we will solve it quickly and smoothly.
- Versatile payment options and secure transactions. Invoice or partial payment with Klarna, card payment, etc.
- Fast deliveries: Orders received before 3pm are shipped the same day
- Safe delivery of products with reliable logistics partners (DHL & UPS)
- Price Guarantee to ensure our customers get the best possible deal
- Fast & professional customer service via e-mail and phone. (answer to e-mail within 24h)