HD 600, HD 650 or HD 660S2? All on sale now

Preview text: Sennheiser Sale: HD 600, HD 650, HD 660S2 and more HD 600 vs. HD 650 vs. HD 660S2: which…

Audio AdvisorWednesday, Oct 14, 2026 at 2:00 PM EasternKlaviyo
Audio AdvisorHD 600, HD 650 or HD 660S2? All on sale now
Subject
HD 600, HD 650 or HD 660S2? All on sale now
Preview text
Sennheiser Sale: HD 600, HD 650, HD 660S2 and more HD 600 vs. HD 650 vs. HD 660S2: which…
From
listening@audioadvisor.com
Sent
Wed Oct 14, 2026, 2:00 PM ET
Size
54 KB
Images
13
Links
33, 13 of them buttons
Subject length
43 characters

Against Audio Advisor's usual

Sent in the 2 PM hour, which holds 11% of its emails; 21% arrive in the 11 AM hour. The subject is 43 characters; its average is 39.

Email headers

What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.

From
Audio Advisor <[email protected]>
Subject
HD 600, HD 650 or HD 660S2? All on sale now
Date
Wed, 14 Oct 2026 18:00:47 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.email.audioadvisor.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=email.audioadvisor.com s=mtd1
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

Report this email

Sent just before and after

Oct 19, 2026 11:00 AMJust Landed: Record Doctor XI + More New Gear
Oct 16, 2026 2:30 PMThis week's demo deals: up to 67% off, most one of a kind
Oct 16, 2026 1:19 AMDon't Miss Out on Your Audio Savings!
Oct 14, 2026 2:00 PMHD 600, HD 650 or HD 660S2? All on sale now (this email)
Oct 13, 2026 1:18 AMEnjoy our welcome discount!
Oct 12, 2026 9:06 AMStill on the shelf: demo cables + Pangea up to 69% off
Oct 9, 2026 9:33 AMOne of each, priced to go: this week's demo deals

More from Audio Advisor

All Audio Advisor emails

Sent the same day by similar brands

Same ESP and the closest weekly volume, sent on Oct 14, 2026.

Get the Black Friday insights

We're collecting every Black Friday email from more than 50,000 brands as it lands. Get what we find: who starts first, the biggest discounts, and the subject lines that stand out.

Free. Unsubscribe anytime.