Knif Audio Sora Tube Saturation and Distortion Device

Thanks to its extensive set of precision controls, Sora is exceptionally well suited for mastering and mix bus duties, while remaining highly capable across a wide range of other applications.

Sora features integrated M/S encoding and decoding, dual interstage transformer configurations, and a comprehensive array of fine adjustment options for maximum flexibility. The unit’s sonic character is defined entirely by its SQ Philips NOS pentode tubes and Lundahl interstage transformers.

Two selectable C-core transformer options are provided: silicon iron and nanocrystalline. The Sora design allows seamless switching between these transformers during operation. The silicon iron transformer delivers a familiar, gently colored response, while the nanocrystalline transformer exhibits virtually no hysteresis, ensuring minimal coloration across the entire audio spectrum.

Features

• M/S matrix
• Extensive crossover filtering options for frequency-selective processing
• Wide-range gain adjustments for enhanced versatility
• Parallel processing capability
• Precise and musically effective harmonic and phase control via the Symmetry adjustment
• Distortion stage built around SQ Philips NOS pentode vacuum tubes in a push-pull configuration
• Selectable Lundahl® interstage transformers with nanocrystalline or silicon iron cores
• Soft-touch collet knobs for improved tactile response
• Stepped rotary controls using Elma® switches (except X-fade)

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.