Tung-Sol 7581A

^# 50

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$74.99

1 Critic Review

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Page last updated Jun 20, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated May 28, 2026.

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5.0 (5)

$91.90 $74.99 $16.91 New

$61.99 Used (Like New)

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Price History

Based on price data from 1 merchant for "Tung-Sol 7581A". Prices shown reflect NEW condition. Tracking began Apr 3, 2026.

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Description

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The Tung-Sol 7581A is a high-performance vacuum tube designed to elevate your amplifier's sound quality with its robust construction and precise engineering. Known for its exceptional power handling and smooth tonal characteristics, the 7581A is a favorite among musicians who seek a dynamic, reliable performance from their equipment. Originally developed for high-fidelity audio systems, this tube has found a home in the hearts of guitarists and audiophiles alike, thanks to its ability to produce rich, full-bodied tones with clear highs and deep lows.

The Tung-Sol 7581A is a direct replacement for the 6L6GC, offering a higher plate dissipation that extends its versatility across a range of amplifier designs. Whether you're playing blues, rock, or jazz, this tube delivers the necessary warmth and articulation, making it a versatile choice for musicians who demand clarity and power. Crafted with precision in Russia, it maintains consistent quality and performance, ensuring that your sound remains pristine gig after gig.

Key Features:

Direct replacement for 6L6GC tubes
Higher power handling for extended versatility
Known for producing rich, full-bodied tones
Crafted in Russia for consistent quality
Suitable for a variety of musical genres and amplifier designs

Videos

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Tung Sol 7581A vacuum tube test with Emery Superbaby tube amplifier (Stevie Ray Vaughan noodling)

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Tung-Sol 7581A.

Comparisons

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The Tung-Sol 7581A offers lots of headroom and is brighter than the JJ 6L6GC, which is known for being stout and robust with a darker tone.
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The Tung-Sol 6L6GC-STR has less headroom and more compression compared to the Tung-Sol 7581A, offering a different tonal profile with added midrange.
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Tung-Sol reissue 7027A tubes are preferred by some over JJ 7027A due to higher reliability under the high voltage demands of vintage Ampeg V4s.
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Mods and upgrades

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A TAD premium 5751 can be used in the PI socket to reduce power stage gain by 30%, offering tonal flexibility.
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Tung-Sol 7581A tubes have been used successfully in Ampeg V4s, offering reliability under high plate voltage conditions, unlike some other 6L6GC replacements.
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User experience

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Long plate 12AX7 tubes can be noisy and microphonic, and may not suit high-gain amps like the 5150, where short plate tubes are preferred.
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Owners report that the JJ ECC803S performs well in V1 for amps similar to a JCM800, suggesting compatibility with certain amp circuits.
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Setup and maintenance

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Ampeg V4 amps feature a fixed bias system with a 75k resistor (R49) that sets a cold bias, optimizing tube life and cleaner power amp response.
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Regularly checking the bias and replacing worn components in the bias circuit is recommended for tube longevity and stable performance in Ampeg V4s.
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Features and functionality

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The Ampeg V4's mid knob significantly alters the amp's character, allowing tonal shifts from SVT-like tones to a Marshall-esque sound when adjusted.
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Critic Reviews

Tung-Sol does it again! Introducing the new 7581A!

thetubestore.com

Tung-Sol's 7581A vacuum tube delivers impressive power and balanced sound, standing out from standard 6L6GC models with its enhanced design and construction. The additional cooling fins and robust makeup ensure durability while providing rich, detailed audio. However, while it excels in headroom and tonal balance, some may find it lacks the sharpness that certain players prefer. Overall, it's a notable contender for anyone seeking warmth and clarity in their amp setup, making it a worthy upgrade for vintage gear enthusiasts.

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Genre Usage

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Pricing and availability

Price History

Description

Videos

Reviews

Owner Insights

Comparisons

Mods and upgrades

User experience

Setup and maintenance

Features and functionality

Critic Reviews

Tung-Sol does it again! Introducing the new 7581A!

Genre Usage

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