Harman Kardon HK 725

eBay Australia

Harman Kardon Preamplifier

Harman Kardon hk 725 Ultrawideband Stereo Preamplifier in Perfect Condition

USD$300 ≈ AUD$419

AU 21 Aug 2026

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eBay US

Harman Kardon Preamplifier

Harman Kardon HK770 Amp/HK725 Preamp/HK715 Tuner Plus 2nd Tuner Serviced Amp/Pre

USD$550

US 11 Aug 2026

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eBay US

Harman Kardon Preamplifier

Harman Kardon HK 725 Ultrawideband Stereo Preamplifier & Tuner HK 715 in Boxes

USD$450

US 9 Aug 2026

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eBay Australia

Harman Kardon Preamplifier

Harman Kardon HK-770 and HK-725 Power Amplifier and Pre-amplifier

USD$1,048 ≈ AUD$1,467

AU 7 Jul 2026

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eBay US

Harman Kardon Preamplifier

Harman Kardon HK725 Stereo Pre-Amplifier Fully Serviced / Recapped

USD$385

US 13 Jun 2026

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Reverb Excellent

Harman Kardon Preamplifier

Harman/Kardon HK725 1983 - Silver

USD$300

US 8 May 2026

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Reverb

Harman Kardon Preamplifier

Harman Kardon HK725 preamplifier in box

USD$190

US 25 Apr 2026

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