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Herbie's Audio Lab Black Hole Accessory

I'm glad you wrote this review. I was going to write one myself, but got bogged down in some mixed results with the BH mat. On the positive, it does everything you describe. It also brings out a spatial quality in the music that is down right errie. I also find it seems to deepen the tone of voices and instruments making everything sound more right and relaxed. Its effects are much more revealing than any of the prior Grungebuster mats I've tried.

The one problem I had at first was I was hearing a slightly over damped sound in my system. I thought I was hearing a very slight recess of dynamics. After a few weeks of playing around and comparing notes with some others who have used the BH mat, I've concluded that the mat brings out such a great amount of detail that I was hearing the effects of other tweaks in my system. I had to readjust one Iso Cup Ball that I was using. I had been using the Super Sonic Hardballs, which give a solid tight sound. I switched one ball in the front for a Gabon Ebony and that made all the difference. As of yesterday I switched the Gabon for a new Gabon Gyro and between the use of the Gyro and the Black Hole, I am now hearing the best sound I've ever heard in my system (more on the Gyro later).

My one complaint is that the BH mat brings out so much detail, you start hearing more of the flaws in the lessor quality or engineered recordings.

Of course, all tweaks are system dependent so results may vary for others. I will say, however, that when I would find a disc where I "thought" the Black Hole did not improve the sound, I would remove it to A/B that disc without the mat, and in each and every case, I always preferred the disc with the BH, without hesitation or second guessing.

Lastly, as I've said on many other occassions, Steve, at Herbies, is great to deal with. A no hassle 90 day return policy makes it impossible not to try his products. And, if you need advice on whether his tweaks are right for you and your system, he will not try to pressure you to buy anything. Its more like to talking to a fellow audiophile about tweaks than it is someone trying to sell you something.

A very nice review, by the way.


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  • Herbie's Audio Lab Black Hole Accessory - hartwerger 11:07:39 03/31/07 (0)


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