I had my Sony 2010 for 10 years before installing the Kiwa filter upgrades,
so I feel that I can aptly describe performance before and after.

The Kiwa filters are well worth it, but it's important to remember that
upgrading the filters is merely tweaking the radio. The 2010 was a great
radio for 10 years before I installed the Kiwa filters.

The factory wide filter on the 2010 is a bit too wide for shortwave. It's
great for AM, but with the 5 kHz spacing on the shortwave bands, I would
often get hetrodynes. On the 2010 that's not a problem because of the Sync
modes. With the factory wide filter, I would use the Sync mode to eliminate
the interference. The LFH-4S Kiwa filter is a bit more narrow than the
factory wide filter. This has dramatically reduced the number of hetrodynes
that I hear. I find that I am now using vanilla AM more often than either
Sync mode.

The LFH-4S Kiwa filter is a very good match for shortwave listening, but it
is more narrow than the factory wide filter. If you use your 2010 for AM
listening (530-1710), you will notice a difference. But even on AM, the
sound of the LFH-4S filter is fine. If I want high fidelity AM, I use my GE
SuperRadio.

I always found the factory narrow filter to be like mud. Everything was
muffled. While the Kiwa FM 3.5/S filter is even narrower than the factory
narrow filter, it's also sharper. An added bonus to the Kiwa narrow filter
is that it has zero insertion loss. I didn't realize how much signal was
lost with the factory narrow filter. The Kiwa narrow filter provides a much
stronger signal.

I highly recommend the Kiwa narrow filter. It is a must.

The Kiwa wide filter is quite good, and I also recommend it. I would put it
in the "recommend" rather than "highly recommend" category.

Bob


"Riz" wrote in message
m...
Hi,

I just want to know is Kiwa filter an absolute requirement for 2010?
What would be shortcomings of 2010 without it. Does Kiwa filter make
major/substantial perfomance impact?

Riz