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Yahoo Auctions

operation goods BenchmarkMediaSystems HPA4 flagship high-powered headphone amplifier pre-amplifier benchmark media Yahoo Auctions Auction bid
¥111,000 Sep 29, 2025
- Oct 5, 2025

Audiogon

Benchmark Media Systems HPA4 Headphone Amp, Custom Heatsinks, SR Purple Fuses Audiogon $2,400 Feb 9, 2025
- Feb 9, 2025

Mercari Japan

Benchmark Media Systems HPA4 Black Mercari Japan ¥429,992 79% May 23, 2024
- Jun 26, 2024

Yahoo Auctions

Benchmark Media Systems HPA4 silver headphone amplifier DAC audio equipment used beautiful goods W8501555 Yahoo Auctions Auction bid
¥396,000 Feb 15, 2024
- Feb 16, 2024

Yahoo Auctions

Benchmark Media Systems HPA4 farm wear up te-to kit firmware update kit Yahoo Auctions Auction bid
¥18,000 Dec 4, 2023
- Dec 10, 2023

US Audio Mart

Benchmark Media Systems HPA4 THX Headphone Amplifier US Audio Mart $2,300 4% Oct 3, 2022
- Oct 31, 2022

Yahoo Auctions

as good as new Benchmark Media Systems HPA4 headphone amplifier Yahoo Auctions Auction bid
¥350,000 Jan 9, 2021
- Jan 12, 2021

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