Pass Labs - X150.8 Power Amplifier

Get in the Habit of Experiencing Elevated Musical Balance, Authority, Dynamics, and Finesse with the Pass Labs X150.8: Hand-Built, U.S.A.-Made Power Amplifier Outputs 150Wpc and Plays with Rich, Communicative Sound

If you’ve any spent time eyeing Pass Labs X Series amplifiers, you’ve probably gone back online to gaze at the models multiple times. That habit is hard to break. The beautiful look of these components alone is enough to draw anyone’s attention. And that’s before you hear what they can do in stereo operation. All the more reason why you should quit looking at X150.8 and take it home. The most affordable entry in the series cuts no corners and shares many of the same characteristics of its bigger siblings, not the least of which is its U.S.A. build quality.

Operating with an exquisite blend of balance, authority, dynamics, and finesse, the 150Wpc X150.8 offers the grip, dynamics, and focus of Class AB topology even as it preserves the tonal integrity and low-level nuance of the company's Class A designs. What can you expect? Its sonic character is confident but never sharp: transients are clean; bass is controlled; the midrange richly communicative. The overall presentation is composed and natural, and free of harshness no matter how much you crank the volume.

While technically a Class AB amplifier, X150.8 (like all Pass Labs AB amplifiers) is heavily biased into Class A mode. The upshot: At lower power, it delivers the sonic attributes of the company's Class A amplifiers. The measured specifications tell a similar story. Ruler-flat frequency response from 1.5Hz to 100kHz means music will be reproduced with sublime clarity. A damping factor of 150 assures tight, tuneful control over the lower registers. And audiophile-grade parts throughout assist in replicating high and midrange frequencies with pleasing warmth. One thing you won’t hear: noise.

As made obvious by its gorgeous appearance, the 7.5 x 19 x 21.5-inch (HWD) X150.8 personifies the exacting mentality with which Pass Labs approaches its components. Unlike many manufacturers, Pass Labs makes each of its amplifiers to a specific design brief. Every model is fine-tuned to Mr. Pass’ vision and hand-built to the required parameters at Pass Labs’ California facility. Plan on an assembly time of between eight and 10 weeks.

Any wait is worth it. Just imagine ogling that big, round, blue meter in the front and center of X150.8 whenever you want. It's not an output level meter, but an indicator of bias current being delivered. Most listeners will not make it budge past the 10 o’clock position. X150.8 also touts a nearly one-inch-thick machined aluminum front panel to assist in controlling vibration. On the rear panel, an RCA input and balanced XLR input accompany two pairs of seemingly indestructible speaker connectors, a signal ground, and a 12V trigger. Plus, a pair of handles that might indeed come in handy when you move it.

With heat sinks on each side of the chassis and banks of output transistors to help deliver sonic goodness, the 88-pound X150.8 requires adequate airflow in terms of placement. And a high-grade shelf or platform. To learn more about this exceptional component, just contact us at 312-433-0200.