# RAAL-requisite SR1a - Earfield™ Monitor/Headphone - Official Thread

**URL:** <https://forum.headphones.com/t/raal-requisite-sr1a-earfield-monitor-headphone-official-thread/3220>\
**Category:** Official Headphone Model Discussion\
**Tags:** high-end, raal-requisite\
**Created:** [June 6, 2019, 1:25am UTC](https://forum.headphones.com/t/raal-requisite-sr1a-earfield-monitor-headphone-official-thread/3220 "2019-06-06T01:25:26Z")\
**Posts on this page:** 1\
**Showing post:** 674

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**Author:** ![Torq](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/torq/32/16384_2.png) [@Torq](https://forum.headphones.com/u/Torq)\
**Post date:** [January 25, 2020, 10:38pm UTC](https://forum.headphones.com/t/raal-requisite-sr1a-earfield-monitor-headphone-official-thread/3220/674 "2020-01-25T22:38:54Z")

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In between naps, medications and whining, I finally got around to putting both the SR1a on my [measurement rig](https://forum.headphones.com/t/reviewers-references-disclaimers/3046/5). And comparing them to perhaps the most interesting recent challenger, the HEDDphone:

 ![SR1a and HEDDphone - Frequency Response - 84 dB at 300 Hz - CUST](https://us1.discourse-cdn.com/flex016/uploads/headphones/original/2X/3/301f2b5453677a2df9e6a5cd6172108d0b0200a9.png)

Now bear in mind this rig is not a professional-level/research grade setup. And that I hear the SR1a’s bass as being a bit lower in level than the HEDDphone (I’m a bit skeptical about how good this setup is below 100 Hz). But otherwise, this largely gels with what I hear when listening to music.

It also explains the zingier/splashier delivery of the HEDDphone.

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_[View the full topic](https://forum.headphones.com/t/raal-requisite-sr1a-earfield-monitor-headphone-official-thread/3220)._