A Compact Tube Preamp with XLR D.I.
Sushi Box Effects has officially released the Neptunium, a compact yet powerful tube preamp designed for musicians seeking a high-quality direct input solution. The Neptunium takes inspiration from the acclaimed Noble preamp, channeling its signature warmth and clarity into a significantly smaller enclosure.
A Miniature Powerhouse
At the core of the Neptunium is the design philosophy behind Nobelium, Sushi Box Effects’ previous iteration inspired by the Noble preamp. While the Nobelium incorporated a full preamp with XLR D.I., the Neptunium focuses on refining the XLR output section into a more space-efficient package without sacrificing tonal integrity.
The two-band boost-only tonestack, modeled after the classic Fender/Marshall/Vox EQ, offers a simple yet effective way to shape tone. With both controls at zero, users can achieve a flat response, ensuring versatility for various playing styles and instrument types.
Key Features
- Tube-driven XLR D.I. output for direct connection to front-of-house systems or recording interfaces.
- Two-band boost-only tonestack, providing intuitive EQ control.
- Separate volume controls for the 1/4” output and XLR D.I., with the latter positioned conveniently next to the XLR jack.
- Switchable high-pass filter (-6dB per octave below 90Hz) to reduce excessive low-end rumble and prevent muddiness in mixes.
- 9-12VDC center-negative power input, internally stepped up to over 300V for optimal tube performance.
- Compact enclosure (4.8” x 2.64” x 1.58”), making it pedalboard-friendly.
Final Thoughts
With the release of Neptunium, Sushi Box Effects continues its tradition of crafting high-quality tube-based pedals that cater to gigging musicians and recording artists alike. Whether used as a warmth-enhancing DI box, a tube preamp for pedalboards, or a direct-to-interface solution for home recording, the Neptunium promises to deliver professional-grade tone in a compact footprint.
For more information and availability, visit Sushi Box Effects’ official website.
