Warwick Bass PA-500 - Power Amp 500W

The essentials to know about the Warwick PA 500 bass amp head

• High power reserve in a compact format: 500 W at 4 ohms and 300 W at 8 ohms, ideal for driving a bass cabinet with authority.


• Transistors + Class D: fast response, tight lows, and excellent efficiency, with a lightweight design (3.13 kg).


• Highly usable 4-band EQ: Bass, Low Mid, High Mid, Treble with cut/boost action of +/-15 dB per band.


• Simple and reliable for live use: front panel mute, clipping LED indicator, and direct connectivity (Line In/Out, Speaker Twist speaker output).

Warwick PA Series: the direct and powerful solution to amplify your sound

With the PA 500, Warwick offers a bass power amplifier head designed to focus on the essentials: power, precision, and immediate handling. Its discreet size facilitates integration into a modern setup, whether you are looking for a reliable backup head, a lightweight amp for gigs, or a clear power block to highlight your instrument and effects chain.

For which bassists and contexts is the Warwick PA 500 made?

The Warwick PA 500 is aimed at bassists who want an efficient, clear, and hassle-free amp. It suits both intermediate players and seasoned musicians, especially if you already shape your sound identity through your playing, bass, external preamp, or pedals.

In rehearsal, its 300 W at 8 ohms already provides a solid foundation with a suitable cabinet. On stage, its 500 W at 4 ohms offers the necessary headroom to maintain definition, even when the drummer and guitars turn up the volume. In the studio, its "clean, dynamic, controlled" philosophy makes it an excellent platform for clean recordings and consistent re-amping.

Controls, EQ, and connectivity: the essentials in the right place

The front control section goes straight to the point: Volume and 4-band EQ (bass, low mids, high mids, treble). This layout allows quick sculpting of a sound that sits well in the mix: thickening the low end without muddiness, scooping or boosting mids to gain presence, and adjusting attack via the treble.

For real-world playing, Warwick added practical features: a front panel Mute switch (perfect for silent plugging/unplugging), a clipping LED indicator to keep the signal clean, and a front instrument input in 6.35mm mono Jack format for quick pedalboard wiring.

On the rear, the PA 500 offers a line input and a line output in 6.35mm mono Jack, useful for integrating a preamp, multi-effects, modeling system, or chaining your signal depending on your setup. The Speaker Twist speaker output ensures a robust connection with your cabinet, especially appreciated when gear is frequently moved.

Sound character: a clear, fast, and highly controllable Class D amplification

The Warwick PA 500 is based on a solid-state design with Class D amplification: expect a clean and responsive reproduction, with solid low-end performance and an immediate dynamic feel under your fingers. The clean tone remains precise, and the definition of attacks (fingers, pick, slap) stands out easily, especially if you use the low/high mids to place your bass in the mix.

Its approach favors comfortable headroom and controlled coloration: it's an ideal head if you seek faithful rendering of your instrument or if your main tone comes from an external preamp/overdrive. The clipping LED helps you set your level to maintain a clean sound or push the signal to the threshold that suits your style.

Technical specifications

Category	Bass amp head	EQ	4 channels
Technology	Solid state	Color	Black
Category	Amplifier	Power output	500 W

Controls	Bass, Low Mid, High Mid, Treble, Volume	Rear voltage selector	120/240 VAC
Front instrument input	6.35mm mono Jack	Input voltage	120 to 240 VAC / 50-60 Hz / 100 W
Rear line input	6.35mm mono Jack	Dimensions (W x D x H)	250 x 270 x 63 mm
Rear line output	6.35mm mono Jack	Weight	3.13 kg
Rear speaker output	Speaker Twist	Note	the device can only be used in countries with mains voltage from 120 to 230 V. Other voltages may damage the device.