Hifonics TPS-A500.2 THOR 2-Channel Powersports Amplifier

The Hifonics TPS-A500.2 is a compact two-channel powersports amplifier designed to add dedicated amplification where space is limited. It is suited to ATV, UTV, side-by-side, golf cart, and marine-style audio installations using a 12-volt electrical system. Its full-range design lets it support a pair of speakers while keeping the amplifier footprint small.

With 250 watts RMS per channel at 2 ohms, the TPS-A500.2 provides useful output for appropriately matched full-range speakers. It also delivers 125 watts RMS per channel at 4 ohms, giving installers options when selecting speakers and configuring a system. A 2-ohm-stable design supports compact, high-output powersports speaker systems when wired correctly.

The amplifier uses a full-range Class-D topology for efficient operation in a compact chassis. Its adjustable input level accepts source signals from 0.2 to 9 volts, helping it integrate with many RCA-equipped source units and preamplifiers. A low-noise preamplifier stage is intended to reduce incoming source noise before amplification.

Selectable high-pass, full-range, and low-pass crossover modes help tailor the amplifier to the speakers being used. The high-pass filter adjusts from 15 to 300 Hz, while the low-pass filter adjusts from 50 to 300 Hz. This makes the TPS-A500.2 suitable for full-range speakers, high-passed tower speakers, or other system-specific applications within its rated operating limits.

Marine-grade protection helps the amplifier suit installations exposed to moisture and outdoor conditions. The design uses a conformal-coated circuit board and is specified to meet ABYC and ASTM standards, while the aluminum heat sink aids heat dissipation. A detachable Molex-style wiring harness also simplifies installation and removal in tight powersports mounting locations.

Key Features

• Two-Channel Class-D Design: Efficient full-range amplification in a compact format.
• 2-Ohm Stability: Supports 250 watts RMS per channel at 2 ohms.
• Marine-Grade Protection: Conformal-coated circuit board resists moisture and corrosion exposure.
• Adjustable Crossovers: Select high-pass, full-range, or low-pass signal routing.
• Low-Noise Preamplifier: Helps reduce noise from the connected source unit.
• Protection Diagnostics: Lighted indicators monitor thermal, overload, DC, and short conditions.

Design & Installation

The TPS-A500.2 uses an aluminum heat sink and compact black chassis for installations where mounting space is restricted. Its marine-oriented construction includes a conformal-coated PCB for added resistance to salt spray and moisture exposure. The amplifier uses RCA signal input and detachable Molex-style power and speaker connections.

Mount the amplifier on a secure surface with adequate ventilation; do not mount it upside down. Use 10-gauge power and ground cable, protect the positive power lead with a 30-amp fuse within 18 inches of the battery, and connect a compatible RCA-equipped source unit. Set the input level as a gain match rather than a volume control, then choose the crossover mode and frequency range that fit the connected speakers.