Boss PH-1 Phaser

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$170.83 Price Tier: Standard

4.5 (5)

2 Critic Reviews

1 Review

This product is Vintage or Discontinued

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$95.92 - $142.99

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The Best Boss Pedals: 50+ Years of Shaping Guitar Tone

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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 June 20, 2026.

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5.0 (8)

$170.83 35 available Used

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Average Price: $171

Standard/Professional

$75

$201+

Price Tier

In the Phaser Effects Pedals category, Boss PH-1 Phaser is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

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Description

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Introducing the Boss PH-1 Phaser, the pioneer in the realm of phase shifters. Originating from Japan, this classic stompbox delivers a robust and rich tone through its straightforward two-knob control. Although it was later succeeded by the PH-1R featuring additional resonance control, the original PH-1 Phaser remains a favorite amongst musicians for its distinct simplicity and warm, analog sound.

Key Features:

A flagship product from Boss, made in Japan
Simple two-knob control for easy operation
Produced from 1977 to 1981
Laid the foundation for the later PH-1R model with added resonance control
Delivers a rich, warm analog tone
Ideal for musicians who appreciate simplicity and classic sound

Product specs

Brand	Boss
Model	PH-1 Phaser (Black Label)
Finish	Green
Year	1977 - 1981
Made In	Japan
Categories	Phaser Pedals

FAQs

What kind of sound can I expect from the Boss PH-1 Phaser?: The Boss PH-1 Phaser delivers a classic, warm, and sweeping modulation effect that is ideal for adding depth and movement to your guitar tone, perfect for genres like rock, funk, and psychedelic music.
How many stages does the Boss PH-1 Phaser have?: The Boss PH-1 Phaser features a four-stage phasing circuit, which provides a rich and smooth phasing effect suitable for a wide range of musical styles.
Is the Boss PH-1 Phaser suitable for live performances?: Yes, the Boss PH-1 Phaser is built with durable construction and simple controls, making it reliable and easy to use for live performances.
Can the Boss PH-1 Phaser be used with a bass guitar?: The Boss PH-1 Phaser can be used with a bass guitar, offering a unique modulation effect that enhances the depth and character of bass tones.
What power supply does the Boss PH-1 Phaser require?: The Boss PH-1 Phaser typically requires a 9V battery or an appropriate 9V DC power adapter for operation.

Videos

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Gear Confessions

Gear Demo - Boss PH-1 Phaser

Gear Confessions

BOSS PH-1 Phaser, Japan silver screw from May 1979.

MSMWorkshop

Boss PH-1 Phaser Demo!

Cameron Johnson

Vintage Boss Pedal Collection: PH-1 Phaser

Clifton Wright

BOSS PH1 [Sound Check]

Audio Freaks

生産初年度「BOSS PH-1」 Phaser Vintage Pedal - Sound Check

魔法の箱研究所 - Stompbox Review Channel -

Reviews

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PROS

Natural sound quality, comparable to phase 90 with adjustable depth
Quiet operation, no hissing or hums
Versatile, suitable for laid back music to rock or funk
Built well, durable construction
Classic sound, can replace digital effects pedals
Reminiscent of the original Uni-Vibe sound without the high cost
Longevity, still functional since the Seventies

CONS

Requires 12VDC power supply, not the more common 9VDC
Modification needed for 9VDC power supply use involves basic electronics knowledge

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Boss PH-1 Phaser.

Features and functionality

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The PH-1 requires a 12V power supply and lacks a persistent LED indicator, which can be impractical for some pedalboard setups.
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The resonance knob provides a range from subtle phasing at 7-8 o’clock to intense effects past 3 o’clock, with a "vibe-esque" sound at high depth and low resonance.
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Comparisons

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The MXR Phase 95 is noted to sound closer to the PH-1 than the Boss MD-200, despite still being different.
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The PH-1R and PH-2 also require an ACA adaptor, making them less ideal as upgrades if seeking to maintain the PH-1's characteristics.
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The MXR Phase 95's 45 setting with the script on is described as mellow, similar to a Univibe, offering lush phasing in the 90 setting.
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The EHX Nano Small Stone offers a lower frequency sweep than the MXR, with a color switch providing warm, lush tones on one side and intense, resonant sounds on the other.
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The PH-2, praised for its classic funky sound, excels in psychedelic tones and is half the price of the PH-1r, offering two modes with distinct tonal characteristics.
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Setup and maintenance

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A simple modification exists to make the PH-1 compatible with 9V power, though daisy chaining with another 9V Boss pedal is an alternative.
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Users prefer positioning the PH-1R after fuzz pedals and before overdrives for optimal sound integration.
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User experience

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Owners find a "shininess" in the MD-200's phaser effect that some describe as artificial compared to the PH-1, typical of multi-effect pedals.
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When powered at 9V instead of 12V, users report the only difference is the brightness of the LED indicator.
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Use cases and applications

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Works well with faster rates when playing slow, spacey music, and can emulate a vibe sound suitable for Pink Floyd songs without hitting the "zero point."
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The Boss PH-1r is favored for swells, washes of noise, and texture, making it suitable for psychedelic and shoegaze music.
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Value and pricing

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A second-hand PH-1R can be found for around 99 euros, indicating a reasonable price for vintage pedal enthusiasts.
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Critic Reviews

🎸 🎛 BOSS PH-1 Phaser (1979) - Unbiased Sound Review

tonepedia.com

The Boss PH-1 Phaser is praised for its enduring charm and solid performance as an analog phaser. This 1979 classic stands out for its simplicity and the reliability synonymous with Boss pedals. While it doesn't attempt to dazzle with flashy features, it delivers a warm and effective phaser effect that many find lacking in modern digital alternatives like the PH-3. However, the PH-1 is a vintage gem now only available in the second-hand market, making it a rare find for enthusiasts. Overall, it's a beloved piece of history that continues to resonate with guitarists seeking that classic analog sound.

positive

Full Review

I Heart Guitar: Comparing The BOSS Phaser Family - Roland Resource Centre

rolandcorp.com.au

The Boss PH-1 Phaser, a pioneering piece from the late '70s, offers a simple yet effective 4-stage phasing with controls for Rate and Depth. While it aimed to emulate the Hammond Leslie cabinets, guitarists embraced its unique sound, making it a distinct entity. The evolution through its successors, like the PH-1R with added Resonance control and the more versatile PH-2, reflects Boss's commitment to innovation. However, the PH-1's analog roots may not satisfy those seeking modern digital precision. Overall, it's a classic for vintage tone enthusiasts, though perhaps less appealing for those craving cutting-edge versatility.

positive

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4.5 out of 5

Based on 1 Review and 5 Ratings

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