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Groove Tube STP-G II main image

Groove Tube STP-G II

Groove Tube STP-G II

^# 93

in Guitar Preamps

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Page last updated Aug 10, 2025

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Description

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The Groove Tube STP-G II is a versatile guitar preamp designed for musicians seeking to enhance their tonal palette with rich, warm tube sounds. Known for its all-tube circuitry, this preamp offers authentic tube-driven tones that cater to both vintage and modern styles. Whether you're exploring blues, rock, or jazz, the STP-G II provides the flexibility and clarity needed for precise sound shaping.

With its user-friendly layout, the Groove Tube STP-G II allows effortless control over your sound. It features separate input and output level controls, ensuring you can dial in the perfect amount of gain and volume for your setup. The preamp is also equipped with a 4-band EQ, enabling detailed tone sculpting across bass, midrange, and treble frequencies. This ensures that your guitar's unique character is preserved while adding depth and dimension to your performance.

Perfect for studio recordings or live gigs, the STP-G II stands out with its ability to deliver consistent and reliable performance. Its robust build quality ensures durability, making it a dependable companion for touring musicians. Additionally, the preamp's design minimizes unwanted noise, resulting in a clean and crisp output that highlights your playing dynamics.

Key Features:

All-tube circuitry for authentic tone
Separate input and output level controls
4-band EQ for detailed tone shaping
Low-noise design for clean sound output
Rugged construction for durability and reliability

Videos

魔法の箱研究所 - Stompbox Review Channel -

魔法の箱研究所 - Stompbox Review Channel -

「Vin-Antique PPSE ’79」サウンドレビュー！with Groove Tube STP-G 【魔法の箱研究所】

Video thumbnail for 「Vin-Antique PPSE ’79」サウンドレビュー！with Groove Tube STP-G 【魔法の箱研究所】 by 魔法の箱研究所 - Stompbox Review Channel -

「Vin-Antique PPSE ’79」サウンドレビュー！with Groove Tube STP-G 【魔法の箱研究所】

魔法の箱研究所 - Stompbox Review Channel -

魔法の箱研究所 - Stompbox Review Channel -

Reviews

5.0 out of 5

Based on 1 Review and 1 Rating

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rmerrill2470

233

about 10 years ago

Groove Tube STPG-II

This is a later model, the STP-G II. You can use any output tubes - 6L6, EL34, KT88 etc. Besides Speaker Out, Emulator Outs, Line Out and a Parallel Effects Loop, the rear panel has a switch for Class A or Class A-B operation, which further ups the versatility aspect of this amp.

Roles:

Guitarist Bassist

Genres:

Blues Jazz Jazz fusion

2

Reply

jimmarchi1

41029

10 years ago about 10 years ago

its actually a bias switch, fixed or cathode

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Added to Equipboard on 04-14-2016 by

rmerrill2470

Gear IQ 233