IEM Target in a studio
Blog, General, Measurements

IEM Targets: One Last Word

Let’s discuss IEM frequency response targets — probably for the last time on this blog. I’ve previously touched on this topic before. Many fellow headphone fans are putting a lot of effort into making sound objective and finding the ideal frequency response target. But I...
Blog, Reviews, Sennheiser

Sennheiser HD 650 in 2025

Lately, I noticed the availability and pricing of the Sennheiser HD 650 became unstable. Prices are on the rise and I heard a rumour about what could be the cause. So to add this classic headphone to my collection (again), I ordered one very recently...
Blog, IO Audio, References, Reviews

Unboxing: IO Audio Sogno

I had teased and mentioned the IO AUDIO (I\O Audio) Sogno in my SIAS impressions. On that day, I think it had the best-tuned upper mids and transition into treble that I have heard in a very long time. So I went ahead and purchased a pair from...
Blog, Oriveti

First Impressions: Grand Oriveti Supremacy

Intro These are my first impressions of the Grand Oriveti Supremacy high-end IEM preceding a full review. The Supremacy has a 4-way crossover design with dynamic, BA and EST drivers. Spoiler: It sounds fantastic, is stunningly beautiful and is one of the most comfortable IEMs...
Mojo2 by Klaus
Blog, General

Hi, I’m Klaus

Welcome to my little blog. I’m a German audio enthusiast, writer, and semi-professional photographer who’s been immersed in the world of high-fidelity sound – professionally, but mostly as enthusiast. A Journey Through Sound My fascination with portable audio began in 2009 when I joined the...
Blog, General, HEDD, HEDD

HEDDphone TWO GT: Official Product Photos

This is the first time I have shot official product photos (cutouts) for a release. Until recently, I was working full-time for HEDD Audio for over 4 years and also accompanied the HEDDphone TWO GT project. Find out more about the HEDDphone TWO GT on...
Blog, General, References

CIHE Beijing 2024 Show Impressions

In a spontaneous decision, I attended the 2024 China International Headphone Expo (CIHE) in Beijing this past weekend. I had not prepared for the show and was just informed about the event a few days earlier. So I went on a 1-day-trip to Beijing and...
Blog, References, Softears

First Impressions: Softears Enigma

I received a review unit of the Enigma from Softears and want to share some early impressions. I am currently traveling so I neither have access to my main camera nor my measurement setup. So please excuse my lazy snapshots using my wife‘s (highly portable)...
TWO GT Brochure
HEDD, References

HEDDphone TWO GT: Brochure

When the HEDDphone TWO was finally finished, I have to admit that I was a little bit disappointed. It did not have the sonic characteristics of the HEDDphone ONE. That is not to say that the HP2 was not a technical upgrade – because it...
HEDD Audio Logo
HEDD

The HEDD Logo Recreated

Have you ever wondered what HEDD’s logo is supposed to represent? It looks like a grenade and not quite resemble an AMT. Well, that’s because it’s actually the company’s unique shape of the AMT’s pole plate and not the driver itself. To be honest, not...
HEDD TYPE MK2 Quickstart
HEDD, References

MK2 Quickstart

Freshly hired as Int. Sales Manager in 2020, one of my tasks pre-launch of the TYPE MK2 series was to design a quick start guide for the speakers. I used the texts and materials given to me. The guide served its purpose well, but the...