1 very low noise pair) JAN-CRP-5814WA Raytheon red tip black plates triple mica "D" getter like new 1958 in white boxes

1 tube) 8.2/9.0ma Gm=1900/2000

1 tube) 9.4/8.0ma Gm=2000/1800

Good NOS MA range 8-10ma

Good NOS Gm range 1800-2200

Recommended for

- Woo Audio WA4 headphone amp

- Bottlehead Crack

- Bottlehead Foreplay

- CJ PV12

- Jadis amp

- Unison Research Unico-P 2005

- Einstein preamp

- Head-Direct EF1 Hybrid Headphone Amp 2008