Pass Labs INT-25
Pure Class A poise gives the Pass Labs INT-25 a rich, transparent presentation, marrying tactile midrange color with deep, controlled bass and expansive imaging. Stereophile heard exceptional depth and focus, while HiFi News praised its effortless detail and unexpected muscle. This is a minimalist high-end integrated built for listeners who prize immersive musical flow over feature count.
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Deliciously Crispy
Sound Quality
96/100
Build Quality
92/100
Features Connectivity
81/100
Value for Money
91/100
Pros
Exceptionally transparent, natural and musically absorbing sound with deep, precisely organized imaging.
Powerful, tightly controlled bass and convincing dynamic authority that exceed expectations for its 25W Class A rating.
Substantial, heirloom-grade construction with thick aluminum, massive heatsinks and high-quality controls.
Cons
Minimal connectivity: only three RCA inputs, with no balanced I/O, DAC, phono stage, tape loop, pre-out or subwoofer output.
The hot-running Class A design requires generous ventilation and consumes significant power when active.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 96/100
Reviewers consistently describe an unusually transparent, natural and musically absorbing Class A presentation, combining rich tonal color with serious control and scale. Its ability to produce a deep, precisely organized soundstage and unexpectedly forceful dynamics is a recurring theme, although one reviewer preferred the sharper attack of a Naim.
Transparency Resolution
96/100
Stereophile heard a less obstructed, more transparent view into recordings and called the INT-25 its new solid-state reference. Enjoy The Music and ecoustics likewise found its transparency astounding, while HiFi Choice praised its finesse with musical minutiae and HIFI HUFF heard no veil, syrupiness or muffling.
Tonal Balance Musicality
97/100
The midrange receives exceptional praise: HIFI HUFF calls it silky, rich, textured and haunting, with unusually lifelike vocals. Across reviews, the amp is described as warm and fluid without becoming dark, soft or fatiguing; Stereophile found it both highly musical and notably neutral.
Dynamics
95/100
Despite its 25W Class A rating, reviewers repeatedly found substantial grip, headroom and bass authority. HiFi News reported that it never seemed strained with floorstanders, while Positive Feedback praised both large swings and fine microdynamic shading; HIFI HUFF notes that ultimate leading-edge attack was less sharp than with a Naim.
Soundstage Imaging
96/100
Stereophile heard greater depth, focus and spatial precision than with its Pass/PrimaLuna comparison, including previously unnoticed room cues. Other reviewers describe a huge, layered stage with stable, naturally sized images, strong separation and convincing three-dimensional depth.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
92/100
Reviewers describe substantial, purposeful construction, including a thick aluminum chassis, large heatsinks, robust binding posts and a massive power supply. HIFI HUFF calls it built like a tank, and Alpha Audio says the controls and construction feel capable of lasting for decades.
Features Connectivity
81/100
The INT-25 is deliberately stripped back: three single-ended RCA line inputs, one speaker-output pair, an IEC inlet and a substantial remote handling power, input, mute and volume. There are no balanced connections, phono stage, DAC, digital inputs, network functions, subwoofer outputs or tape loop, a limitation several reviewers explicitly note.
Value for Money
91/100
At roughly $8,295-$10,900, the INT-25 is a costly minimalist integrated, and HiFi Choice and Alpha Audio flag the price and sparse facilities as concerns. Even so, several reviewers consider its performance compelling for the class: HIFI KNIGHTS calls it a bargain, ecoustics calls it a relative bargain, and Enjoy The Music argues that similarly satisfying separates would cost substantially more.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
YouTube Reviews
Forum Mentions
No forum mentions found yet
Specifications
- Class
- A
- Type
- Stereo
- Gain (dB)
- 29/35
- Volume control (1dB steps)
- 63dB
- Remote
- yes
- Inputs
- 3
- Outputs
- 0
- Power Output /ch (8 ohm)
- 25 Watts
- Power Consumption (W)
- 200
- Standby Power Consumption (W)
- <1
- Dimensions (W x H x D)
- 17 x 17.375 x 6
- Weight (LBS)
- 49
Manufacturer's Description — Pass Labs
The INT-25 is the integrated for purists: fewer stages, fewer parts, more connection. It takes the spirit of a minimalist Class A amplifier and pairs it with a clean, simple line stage—so the system feels immediate, fast, and emotionally direct.
This is subtraction as a philosophy: remove what you don’t need, elevate what you came for. The result is an integrated that feels alive—especially with efficient loudspeakers and real-world rooms.
The INT-25’s magic is how it communicates nuance at everyday volume. Vocals sit “in the room,” guitars have body and shimmer, and timing feels locked-in without sounding hyped. If you value simplicity, musical truth, and a one-box solution that still feels genuinely high-end, the INT-25 is a beautiful match.
SPECS AT A GLANCE
- Class / Type: Class A, Stereo
- Power: 25 W / 8 Ω (per channel)
- Inputs: 3 | Outputs: 0 | Remote: Yes
- Gain: 29/35 dB | Volume control: 63 dB (1 dB steps)
- Power consumption: 200 W | Weight: 49 lbs
Verified Dealers
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Authorized dealers for Pass Labs INT-25
- A 10 Audio Room 4 Music — in-store — Amsterdam Nieuw-West, Noord-Holland, Netherlands (website)
- Aalen Hifi — in-store — Schwäbisch Gmünd, Baden-Wurtemberg, Germany (website)
- Acoustic Sounds — online and in-store — Salina, Kansas, United States (website)
- Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- Alta Fedelta — online and in-store — Lombardia, Italy (website)
- Assai Audio — in-store — Centro, Comunidad de Madrid, Spain (website)
- Atelier 13 Audio — in-store — Forest Hills, Tennessee, United States (website)
- Audio & Video Expressions — in-store — Philadelphia, Pennsylvania, United States (website)
- Audio Aktoren — online and in-store — Horten, Vestfold, Norway (website)
and 54 more verified dealers