Pass Labs Int 25 vs Int 60

Pass Labs Int 25 vs Int 60

When it comes to high-end audio equipment, Pass Labs has long been revered for its commitment to audio purity and quality. The Pass Labs Int 25 and Int 60 are two exemplary integrated amplifiers from this renowned manufacturer, designed to deliver exceptional sound in compact, all-in-one units. In this article, we’ll compare these two integrated amplifiers, exploring their specifications, features, and performance to help you make an informed decision when choosing the right amplifier for your audio system.

Pass Labs Int 25: Compact Powerhouse

The Pass Labs Int 25 is a compact, high-quality integrated amplifier that combines a Class A preamplifier and a Class AB power amplifier in a single chassis. It features a power output of 25 watts per channel into 8 ohms, making it suitable for driving a wide range of speakers.

Key Features of the Pass Labs Int 25:

  1. Pure Class A Operation: The preamplifier stage of the Int 25 operates entirely in Class A, providing a warm and natural sound signature that audiophiles adore.
  2. MOSFET Output Stage: The Class AB power amplifier stage uses MOSFET transistors for efficient power delivery while maintaining a high level of sound quality.
  3. High-Quality Components: Pass Labs is known for using top-tier components, and the Int 25 is no exception. Premium materials and craftsmanship contribute to its exceptional performance.
  4. Flexibility: With four analog inputs and a high-quality volume control, the Int 25 is versatile and can accommodate multiple sources while maintaining signal integrity.

Pass Labs Int 60: Power and Finesse

The Pass Labs Int 60 is a step up in terms of power and overall performance. It’s designed to meet the demands of audiophiles who require higher wattage for larger speakers or larger listening spaces. The Int 60 offers 60 watts per channel into 8 ohms.

Key Features of the Pass Labs Int 60:

  1. Class A/AB Operation: The Int 60 combines Class A and Class AB operation, offering the benefits of both for a harmonious blend of purity and power.
  2. Superior Power Supply: It features a substantial power supply with ample reserves, ensuring stable and dynamic sound reproduction even at high volumes.
  3. Balanced Inputs: The Int 60 includes both balanced and single-ended inputs, providing flexibility for connecting a wide range of sources.
  4. MOSFET Output Stage: Similar to the Int 25, the Int 60 utilizes high-quality MOSFET transistors for the output stage to maintain audio fidelity.

Performance Comparison

Both the Int 25 and Int 60 offer exceptional sound quality, but there are differences in their performance due to their power outputs. The Int 60, with its 60 watts per channel, is capable of driving more demanding speakers with ease and delivering greater dynamic range.

On the other hand, the Int 25’s lower power output makes it well-suited for moderately efficient speakers and smaller listening environments. It excels in providing the warmth and clarity of a Class A amplifier.


In the world of high-end integrated amplifiers, Pass Labs is synonymous with uncompromising quality and performance. Choosing between the Int 25 and Int 60 ultimately depends on your specific audio system requirements and listening preferences.

If you have smaller, more efficient speakers and value the exquisite sound quality of a Class A preamplifier, the Pass Labs Int 25 is an excellent choice. It offers pure, detailed sound in a compact package.

On the other hand, if you have larger speakers or a spacious listening room that demands higher power, the Pass Labs Int 60 delivers the additional wattage needed to reproduce music faithfully at any volume level.

Both amplifiers are meticulously crafted and designed to bring out the best in your music. Whichever you choose, you can be assured of a remarkable listening experience that Pass Labs is renowned for providing.

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