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There is an observation that I would like to make as my updated DA924 getting in its final stage of burning in.

I feel that it is high likely that the lowest LF improvement that I reported above were not as huge as it might flow from my comments above. I mean even before the stock Lavry DA924 was phenomenal lowest LF performer. The updates that I made did push up upper/mid bass and make the phenomenal DA924’s lover bass more properly connected with the rest of the frequency region. I am sure it is all happen somewhere at the level of perceived harmonics and did not change any actual amplitude response and the DA924 was dead flat before and after.

What however was the revolutionary with my update is the “vigorousness” in the Lavry DA924’s highest frequency is completely gone. Let me to explain how it works. You have a source, let say a tape or a record. You run the source straight and compare it with the source running into AD direct coupled with DA (I use Lavry AD122). Before and after modification the sound during comparing the straight run with AD/DA let say identical. However, before modification it was identical ONLY at the absolutely equal volume level. As soon the AD/DA line has a fraction DB over the AD/DA line begins to sound brighter. After the modification the increase the AD/DA line for a few DB does not make the AD/DA line to sound different then straight feed. I also presume that the HF subsiding impacted my feeling about the “bass improvement”.

Now is the catch. I had 3 DA924 units in my listening room. One I had 9 years ago, a dealer brought one in.  Another one I had just before I bought my own unit, I borrowed it from a local guy to try it – this unit was listed VERY thoroughly. Both the first and second DA924 did not have that HF excessiveness, my own unit had. I sent my on wont in past to Lavry, pays a lot of money to confirm that my unit was to the specifications. So, I have assurance that it properly calibrated and does what is shell… Still, Lavry operation does not operate on the premises of sound but only on the premises of objective engineering. As good as they are the objectively auditable HF extension that my unit had might not have the procedures that Lavry is able to handle. What if my specific unit, of the party from where my unit came from, was made too bright sonically?   It is highly likely as my fist and second Lavry did not have that effect. I need to say that the most critical evolution of DA924 sound I made with the borrowed second unit, before I made the decision to buy DA924 to begin with.

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