# \#benchmark

**URL:** https://forum.headphones.com/tag/benchmark/148.md

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## [Benchmark HPA4 Headphone Amp - Official Thread](https://forum.headphones.com/t/benchmark-hpa4-headphone-amp-official-thread/3508)

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**Author:** [@generic](https://forum.headphones.com/u/generic)\
**Replies:** 10\
**Last updated:** [July 25, 2019, 8:01pm UTC](https://forum.headphones.com/t/benchmark-hpa4-headphone-amp-official-thread/3508 "2019-07-25T20:01:08Z")

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This thread is to discuss the Benchmark HPA4 Headphone Amp. From the manufacturer: Benchmark Media Systems, Inc. and THX, Ltd. have partnered to introduce the Benchmark HPA4 headphone/line amplifier featuring THX…