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Soldano SP-77 Series II Tube Guitar Preamp

Soldano SP-77 Series II Tube Guitar Preamp

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Page last updated Aug 10, 2025

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Description

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The Soldano SP-77 Series II Tube Guitar Preamp is a powerhouse for guitarists seeking to capture the signature Soldano sound. This preamp is renowned for its versatile dual-channel design that caters to both clean and overdriven tones. The Clean channel delivers pristine, clear sounds, while the Overdrive channel provides the iconic Soldano high-gain distortion, perfect for rock and metal enthusiasts.

Crafted for the discerning musician, the SP-77 Series II maintains the rich, harmonic clarity characteristic of tube technology, offering a warm and dynamic response that solid-state counterparts often can't match. This preamp is fitted with a pair of 12AX7 tubes, ensuring that your guitar's natural tone is preserved and enhanced. With intuitive controls, including a 3-band EQ and volume and gain knobs for each channel, you'll have precise control over your sound.

Whether you're playing live or in the studio, the SP-77's all-tube circuitry ensures that your tone remains consistent and reliable. Built with robust components and a rugged chassis, this preamp is designed to withstand the rigors of touring and frequent use.

Key Features:

Dual-channel design for clean and overdrive tones
Equipped with two 12AX7 tubes
Independent 3-band EQ for each channel
Separate volume and gain controls per channel
All-tube circuitry for premium sound quality
Durable construction for reliability in live and studio settings

Videos

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fluidaudiogroup

Soldano SP-77 Series II (modified)

fluidaudiogroup

Soldano SP-77 Series 2 - Quick Demo, clean and drive channel

Saniell

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Soldano SP-77 Series II Tube Guitar Preamp.

Features and functionality

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This preamp offers dual channels, providing flexibility to set distinct EQ and gain settings for versatile overdrive tones.
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The SP-77 is appreciated for its ability to cover a range of tones from mild to mid gain, allowing users to clean up the sound using the guitar's volume knob.
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Comparisons

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The SP-77 is considered a more affordable alternative to the Myasnikov X88 and X99, with comparable utility in sound shaping.
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The Soldano SLO is compared to the 5150, with the latter noted for having more gain and a crushingly heavy tone, while the SLO offers a unique mid to high gain character.
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The SP-77 is seen as having better bottom end compared to older Soldano models, which were critiqued for being shrill and lacking low-end punch.
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Use cases and applications

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The SP-77 can be integrated with a Soldano SLO power amp, effectively functioning as an additional EQ or gain strip for varied channel settings.
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Artists like Matt Bellamy utilize Soldano gear for achieving diverse, saturated tones popular in modern rock music.
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The SP-77 excels in producing a distinctive "crunch" tone, which is highly praised for its phat and rich sound, ideal for rock and metal genres.
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Value and pricing

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Vintage rack gear like the SP-77 is often sought after, but current market prices have increased, making them less accessible.
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User experience

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Owners highlight the SP-77 for its versatility in achieving various tones when combined with pedals, making it suitable for both live and studio settings.
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Artist usage

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Matt Pike

Guitarist

Sleep

Verified via YouTube

In this video, you can see Matt's Soldano SP-77 preamp. He would plug this directly into the front of a Green Matamp GT120 which would often cause problems with the head. He used this setup with the GT120 and later with a proper rack power amp on the first two High On Fire albums before acquiring a proper SLO-100 during the Blessed Black Wings era.

Jun Senoue

Guitarist, Composer

Crush 40

Verified via Twitter

Jun Senoue states on Twitter that the Soldano SP-77 was used for one song on Sons of Angels' (SoA) first and only album "Thrill of the Feel" (source: crush40 on Twitter).