Skip to content

Stax SRM-400S Electrostatic Headphone Amplifier

Marsoni M251S
Sale price$949.50
Pay 4 payments of $237.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Stax SRM-400S Electrostatic Headphone AmplifierThe new 400S employs a STAX custom made low noise DUAL FET is installed on First Stage. And FET is also installed on Last Stage. The characteristics of right FET and left FET are measured strictly. Selected FET are installed as well as SRM 700S. SRM 400S succeeds to the design and the manufacturing method of the high end model SRM 700S, the amplifier which FET are installed in all stages. In addition to the conventional power transformer for the high
Easy Shipping

Quick Dispatch:

Your Stax SRM-400S Electrostatic Headphone Amplifier orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Stax SRM-400S Electrostatic Headphone Amplifier ships.

Need Help?
Questions about Stax SRM-400S Electrostatic Headphone Amplifier, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Stax SRM-400S Electrostatic Headphone Amplifier in your area.

Get Shipping Estimates

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1356 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Angee
Bozeman, US
★★★★★ 5
Buy it!
Size: One Size, Color: (001) Black / Black / Reflective, Size: One Size, Color: (001) Black / Black / Reflective
This hat (visor) is by far one of the most comfortable ones I’ve ever worn! Absolutely love it!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
G
Verified Purchase
Gloria Hernández
Natrona Heights, US
★★★★★ 5
Underarmor
Size: One Size, Color: (001) Black / Black / Reflective
Me encanta todo lo de esta marca. Calidad
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
B
Verified Purchase
BLK
Alexandria, US
★★★★★ 5
Great running visor
Size: One Size, Color: (541) Tux Purple / Pitch Gray / Reflective
Love love love this visor. Light weight and great to run in. Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025
M
Verified Purchase
Marina
Cuba, US
★★★★★ 5
Perfect hat for shielding from the sun
Size: One Size, Color: (299) City Khaki / / Stone, Size: One Size, Color: (299) City Khaki / / Stone
Perfect hat for hot weather, it fits well and shields my face from the sun!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
M
Verified Purchase
Monique Pierre
Natrona Heights, US
★★★★★ 5
Great fit
Size: One Size, Color: (005) Black / White / White
Fits great. Not all caps fit women well, this one does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026

recommand products