Ampeg V-4 (1970)

$599.00 Price Tier: Standard

5.0 (2)

This product is Vintage or Discontinued

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Page last updated Jun 09, 2026

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5.0 (21)

$599.00 11 available Used

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Average Price: $599

Standard/Professional

$300

$801+

Price Tier

In the Guitar Amplifier Heads category, Ampeg V-4 (1970) is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Step back in time with the Ampeg V-4 (1970), a classic guitar amplifier head that has been a staple in rock history. Known for its distinctive all-tube sound, the V-4 delivers a powerful, warm tone that has captured the hearts of guitarists for decades. This amplifier head brings vintage charm and raw power, making it a perfect choice for those who appreciate the authenticity of analog sound.

The V-4’s unique preamp design is key to its ability to produce a rich, full-bodied sound that cuts through any mix. With a straightforward control layout, including a 3-band EQ and reverb, it gives you the tools to shape your sound with precision. The built-in reverb adds depth to your tone, while the selectable midrange frequencies allow for versatile tonal sculpting, making it adaptable to various music styles.

Whether you’re jamming in a garage, performing on stage, or recording in a studio, the Ampeg V-4 (1970) stands out with its distinctive tone that evokes the golden age of rock. Its robust build ensures durability, making it a reliable companion for both live and studio applications.

Key Features:

All-tube amplifier head
3-band EQ for precise tone shaping
Built-in reverb for added depth
Selectable midrange frequencies
Vintage-inspired design and sound
Durable construction for long-lasting performance

Product specs

Brand	Ampeg
Model	V-4 100-Watt Guitar Head with Reverb
Finish	Black
Year	1970 - 1980
Made In	United States
Categories	Guitar Heads
Built-In Effects	Built-In Effects
Color Family	Black
Direct Output	No Direct Output
Electronics	Tube
Impedance	2 ohms, 4 ohms, 8 ohms
Number of Channels	1 Channel
Number of Inputs	2 Inputs
Output Power (Watts)	100
Power Tube Type	6L6
Reverb	Spring Reverb

FAQs

What is the power output of the Ampeg V-4 (1970)?: The Ampeg V-4 (1970) is a 100-watt tube guitar amplifier head, well-suited for both stage and studio use.
Does the Ampeg V-4 (1970) have built-in reverb?: Yes, the Ampeg V-4 (1970) features a built-in spring reverb, providing rich and lush ambient tones.
How many inputs does the Ampeg V-4 (1970) have?: The Ampeg V-4 (1970) comes with two inputs, allowing for versatile connectivity options with different instruments.
What type of power tubes does the Ampeg V-4 (1970) use?: The Ampeg V-4 (1970) utilizes 6L6 power tubes, known for their warm and dynamic tonal characteristics.
Is the Ampeg V-4 (1970) suitable for live gigs?: With its 100-watt output, the Ampeg V-4 (1970) is powerful enough for live performances, providing ample volume and presence on stage.
What are the impedance options for the Ampeg V-4 (1970)?: The Ampeg V-4 (1970) offers impedance options of 2 ohms, 4 ohms, and 8 ohms, making it compatible with a range of speaker cabinets.

Videos

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GnosticX

The Ampeg V4-part 1

GnosticX

Tweaking the mighty AMPEG V4 Guitar Amp!

Johan Segeborn

Reviews

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PROS

Exceptionally durable, survives drops and rough handling
Superior clean tone quality, almost hi-fi
Louder than competitors, including 100-watt Marshall amps
Reliable performance even after many years of use
Capable of very loud volumes without distortion
High wattage output (around 130-134 RMS)

CONS

Heavy and cumbersome to move around
Consumes output tubes quickly if they're of low quality
Requires specific, high-quality tubes for optimal performance

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Ampeg V-4 (1970).

Setup and maintenance

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The V4's midrange driver tube, a 6K11 compactron, is rare and expensive; old stock tubes are preferred for reliability.
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Early 70s Ampeg V4s may lack flyback diodes, which can protect against voltage spikes caused by speaker mismatch.
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Visible scorching on power tube sockets can indicate arcing, suggesting the need for thorough inspection during troubleshooting.
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Simple multimeter tests can help diagnose output transformer issues if capacitors are safely drained first.
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Mods and upgrades

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Some users successfully convert to 6550 or EL34 tubes but note increased stress on the power transformer.
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Swapping coupling cap values from 10nf to 100nf (C3, 6, and 7) slightly boosts low-end frequencies, enhancing the amp's bass response.
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Features and functionality

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The V4 offers output transformer settings for 2, 4, or 8 ohms, allowing versatile cab configurations.
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The output transformer primaries connect differently depending on the year; some have a protective sheath along the chassis.
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The V4 model from 75-77 has two volumes and a master volume, differentiating it from earlier versions.
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Use cases and applications

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The amp is praised for doom/stoner metal, with recommendations to pair with larger cabs for optimal performance.
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Originally marketed as guitar cabs, the V4's 412 cabinets can be fitted with Eminence Basslite series drivers for broader application, including bass.
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Comparisons

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The V4 and V4B share tone stack modules, ensuring similar low-end reproduction capabilities.
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The V4 is considered more tame than an SVT in terms of wattage but shares a similar great sound profile.
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