![Part 2: RAAL-requisite SR1a Earfield Headphone Monitor & HSA-1b Headphone & Speaker Amplifier Review - Reviews - Audiophile Style Part 2: RAAL-requisite SR1a Earfield Headphone Monitor & HSA-1b Headphone & Speaker Amplifier Review - Reviews - Audiophile Style](https://audiophilestyle.com/uploads/monthly_2021_09/SR1A-HSA-1b-HERO.jpg.533b0b26c33e31c60403b4fbe22982be.jpg)
Part 2: RAAL-requisite SR1a Earfield Headphone Monitor & HSA-1b Headphone & Speaker Amplifier Review - Reviews - Audiophile Style
![RAAL-requisite SR1a - Earfield™ Monitor/Headphone - Official Thread - Official Headphone Model Discussion - The HEADPHONE Community RAAL-requisite SR1a - Earfield™ Monitor/Headphone - Official Thread - Official Headphone Model Discussion - The HEADPHONE Community](https://global.discourse-cdn.com/business6/uploads/headphones/original/2X/8/8dc7f77751116208e89863e5df47ae6019a5d1b0.jpeg)
RAAL-requisite SR1a - Earfield™ Monitor/Headphone - Official Thread - Official Headphone Model Discussion - The HEADPHONE Community
![RAAL-requisite CA-1a Circum-Aural Ribbon Headphone is here! @HeadAmp | Headphone Reviews and Discussion - Head-Fi.org RAAL-requisite CA-1a Circum-Aural Ribbon Headphone is here! @HeadAmp | Headphone Reviews and Discussion - Head-Fi.org](https://cdn.head-fi.org/a/11798041.jpg)
RAAL-requisite CA-1a Circum-Aural Ribbon Headphone is here! @HeadAmp | Headphone Reviews and Discussion - Head-Fi.org
![RAAL-requisite SR1a True Ribbon Headphones w/Earfield technology. Lots of +ve reviews. $4,900 MSRP – Kahl Audio RAAL-requisite SR1a True Ribbon Headphones w/Earfield technology. Lots of +ve reviews. $4,900 MSRP – Kahl Audio](https://kahlaudio.com/wp-content/uploads/2021/06/DSC02176-scaled.jpg)