The all-new PDX series are the first ever class-D amplifiers to triumph sound purity and power efficiency.

The PDX Professional Series are a special collection that elevates PDX amplifiers to new heights of prestige with their new luxurious and gorgeous gold aluminium finish.

The first true audiophile D-class amplifiers have never been so remarkably beautiful and elegant.

Incorporating new technology to maximise sonic quality, the new PDX amplifiers deliver extremely low distortion levels, wide bandwidth and industry leading S/N ratios. The new PDX amplifiers have an exceptionally high damping factor, more than 500 for the 4-channel Alpine PDX-F6GC.

What’s more, the all-new PDX amplifiers are 20% smaller than the first generation models and their unique stacking design allows for a large multi amplifier system to be installed virtually anywhere.

With precision design and UltraBlu technology PDX deliver unsurpassed definition. Rivalling even the best high-end amplifiers, PDX set the benchmark with a frequency range of 5Hz-400Hz (mono) and 5Hz-100kHz (4ch).

Unique to PDX, distortion decreases at higher frequencies, resulting in a clean signal where your ear is most sensitive to distortion. -<0.005% THD+N @ 1W, <0.05% THD+N @ rated power. What’s more, PDX are capalable of S/N ratios up to 123dB S/N ar rated power for unprecedented clarity.

Delivering ultra-low impedance, PDX are highly stable for tight bass and superb sound with a dampening factor rating at >1000 (Mono) and >500 (4ch). With tremendous headroom and low distortion, PDX have a high total system efficiency of ~80% (power supply >90%, output stage >90%).

PDX. The new rival in audiophile amplifiers.

Noteworthy Awards

The Alpine PDX Audiophile Series is a recipient of the 2010 CES Innovations honors award. Every year at the world’s largest consumer technology tradeshow, the Consumer Electronics Show (CES), the Innovations Designs and Engineering Awards program recognizes the most innovative consumer electronics products, such as the PDX Series for the In-Vehicle Audio category.

New Reference Grade Output Stage

Ultra-Wide Frequency Response

This super-wide, industry leading frequency range offers listeners unparallel sound quality and detail that bests even the most high-end audiophile equipment. 5Hz-100kHz for 4ch, 5Hz-400Hz for Mono (+0,-3dB).

Total Harmonic Distortion(THD+N) vs. Power

The all-new PDX series amplifiers are not your typical class-D amplifiers. Traditionally, class-D amplifiers have not been known for both low distortion and wide frequency response.

These new PDX amplifiers are the first ever class-D amplifiers to break tradition and trump the amps of yesterday. The PDX-M12, PDX-M6, PDX-F6, and PDX-F4 are synonymous with extremely high resolution and detail.

Total Harmonic Distortion(THD+N) vs. Frequency

Uniquely PDX, distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. -<0.005% THD+N @ 1W, <0.05% THD+N @ rated power.

Signal to Noise

These amps are capable of unheard of S/N ratios up to 95dB S/N @ 1W, 122dB S/N at rated power for extremely clean, uncolored sound. Forget unwanted background noise or static. The PDX amps deliver crystal clear music every time.

Damping Factor

With ultra-low output impedance, the new PDX offers extremely controlled, tight bass for unprecedented sound quality. Ratings are >1000 for Mono and >500 for 4ch.

Power Output to the Extreme

Beefed up Power

The PDX power supply delivers tremendous headroom with low distortion and noise. PDX amplifiers have an extremely high total system efficiency of ~80% (power supply is rated at >90%, output stage is rated >90%).

If the amp gets too hot, the Thermal Protection circuit kicks in and gradually decreases output power until it cools down. Once cool, the power output automatically increases back to the previous level. If the circuit detects a Low Battery condition, it will gradually decrease power output if battery voltage becomes too low. Once the battery voltage increases, power will be restored. This interruption-free design allows for non-stop enjoyment with no hiccups or drop-outs, just clean, clear output.

Low Impedance Stability

These amps are stable at low impedances and are capable of their rated power from 2 to 4 ohms for all models. This allows excellent flexibility with multiple speaker and subwoofer loads and is adjusted automatically.

Certified Power From Birth, GuaranteedEach PDX amplifier comes with its very own birth-sheet. PDX amplifiers are tested and documented to show their true actual output.

Power Management Processor

PDX amps incorporate Alpine’s new Power Management circuit. The Power Management Processor controls all aspects of amplifier performance, monitoring voltage, temperature and output to ensure uninterrupted power output for non-stop listening.