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Class D Amp Showcase

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About this event



At this event, we will listen to and compare Class D amps. The plan is to compare four Class D amps utilizing different technologies, such as  Hypex, GaN, Purifi, etc... and ask ourselves if we can hear any differences. As of now, the specific amps are being determined, but we hope to have examples from Atma-Sphere, AGD, and PS Audio. As soon as we determine the lineup, we will let you know. We plan to use the same music files we used for our streaming shootout event earlier this year.

Check this event page for updates on which amps we will showcase and which electronics and speakers we will use as we finalize the event.

Current amplifier roster, each mono pairs:
  • Orchard Starkrimson 25 Premium: $2,500
  • LAIV Harmony GaNM: $5,200
  • Atma-Sphere Class D:   $6,320
  • AGD Gran Vivace MKIV: $18,999

This in-person event is open to members and non-members. Registration is required. Members must sign in to register to receive a member discount.

Carpooling is recommended. To anyone who needs a ride, or who can provide a ride:

1. Members can visit our Event Ridesharing Forum to arrange a ride to the event.

2. Non-members can send an email to contact@audiophilefoundation.org and we will put you in touch with other attendees in your area.

Date and Time

Sunday, July 12, 2026, 2:00 PM until 5:00 PM Pacific Time (US & Canada) (UTC-08:00)

Location

The California Historical Radio Society
https://californiahistoricalradio.com/
Alameda, CA  94501
USA

Category

In-Person Events

Registration Info

Registration is required
Payment In Full In Advance Only

Number of People Who Will Attend

Non-Members *
$15.00
* This can be your primary registrant type. Only one primary registrant type is allowed per registration.
Register Now

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