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  1. JohnRice

    Worth upgrading old B&K AVR507?

    I should clarify. Both amps use A/B outputs, but the Monolith uses a transformer for power. Class H still uses A/B outputs, but with a switching power supply. That's more efficient, since it doesn't have to store power like with a transformer. It is also significantly lighter. It's an...
  2. JohnRice

    Worth upgrading old B&K AVR507?

    Absolutely. In that price range I'd also consider the Emotiva XPA-5. You'll get more power, plus since it's Class H instead of A/B, it's 32 lbs lighter.
  3. JohnRice

    Worth upgrading old B&K AVR507?

    I should have phrased it differently. DPL had the high frequencies limited in the surround channels. Current formats can provide full range, but virtually every system is configured to cut the low frequencies, especially in the surrounds, which is where the biggest power drain is.
  4. JohnRice

    Worth upgrading old B&K AVR507?

    I’d suggest something like the 3700 along with an amp like the Emotiva XPA-3 or Monolith 3x200.
  5. JohnRice

    Worth upgrading old B&K AVR507?

    That room is definitely suited for a 7.2.4 setup, if you can run wires into the ceiling for the 4 overhead Atmos speakers. And they should go overhead, in the ceiling, not just high and to the sides. You can certainly find speakers that are suitable to go with your current ones. There's no...
  6. JohnRice

    Worth upgrading old B&K AVR507?

    I guess the main question is, what do you want to gain? There's been a LOT of changes since 2002, including high res audio formats, hdmi, 4K, and Atmos/DST:X. That's a lot of stuff. 4 Ohm is a bit of a problem, and heat already tends to be a problem with current units, since they have so much...
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