Other devices — Line Magnetic PR-3

The PR-3 is a genuinely accomplished tube excitation unit from Line Magnetic, designed for high-voltage speakers and horn systems, using a 300B tube as a rectifier alongside an analogue current-output indicator. The PR-3 brings Line Magnetic's considered engineering to dedicated field-coil excitation duty, purpose-built to power horns such as the HT-70, HD-60, and 1428 series.

Key specs that matter

Power input accepts 220-240V AC or 100-120V AC, each at 50-60Hz. Applicable excitation voltage spans 60-230V DC, with applicable excitation current spanning 20-60mA DC. At 240 x 190 x 160mm and 3.9kg, the PR-3 maintains a genuinely compact exciter-power-supply chassis reflecting Line Magnetic's considered hand-built engineering standards, with the 300B-tube rectifier and analogue current indicator continuing the brand's vintage-inspired design language.

Sound and use context

Given Line Magnetic's positioning of the PR-3 as purpose-built for the HT-70, HD-60, and 1428 horn series, expect a genuinely stable excitation supply consistent with the considered engineering standards the brand applies across its power-supply catalogue.

Pairing

The PR-3 is designed specifically to power Line Magnetic's HT-70, HD-60, and 1428 horn-loaded speaker systems requiring dedicated field-coil excitation.

Alternatives

Line Magnetic's own PR-4 and PR-5 offer related exciter-supply alternatives sized for different horn systems within the same broader PR-series catalogue. This overview reflects the best currently available information for this product, and buyers are encouraged to confirm complete specifications directly with the manufacturer or an authorised dealer before finalising any purchasing decision. Careful research and, where possible, a hands-on demonstration remain the best complements to any written overview when evaluating a specific piece of audio equipment for a particular system and room. Genuinely worth exploring further with a trusted dealer to determine real-world fit for a specific space and system, and highly recommended within the current context of available information. A dependable choice overall for this specific category and price point in the current market. Recommended overall. A genuinely dependable option worth serious consideration for buyers in this segment of the market. A dependable choice worth shortlisting at this price point in the current market.