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Hafler XL600 Vs Hafler 9505 Much difference?

Hello all, I am new here and still learning to navigate the website. I have been out of audio for a number of years. I had an old Hafler XL600 years ago and really liked it for the price. I am thinking of getting into audio again and am considering purchasing either an XL600 or the newer Hafler 9505/9500. I have read there have been a lot of improvements in amplifiers in the last decade. Is that true? How much difference is there in the amps I am refering to? Would I notice a difference between the XL600 and the newer amp? I hope to purchase Boston Acoustics VS336 speakers to go with this.
Any info would be helpful.
Thanks
sundriednm
csontos
1,311 posts
 
Rodman,thanks for that info.
rodman99999
6,128 posts
 
Mr C- You're welcome. Happy listening!
perfusionista
2 posts
 

I would not use Shottky Diodes in a 9505. They are great but susceptible to heat and that amp runs hot. IMO hexfred would be the better choice. And I know very little. Fast, Ultrafast, Standard, Soft, Schottky: What’s the Right Rectifier for Your Power Circuitry? - Technical Articles (allaboutcircuits.com)

rodman99999
6,128 posts
 

     I wouldn't use Schottkys in these amps either; especially since both rectifier bridges (L&R channels) are mounted on the front of the horseshoe shaped heatsink, very close to the outputs.    BUT: some people swear by them.

     I've used IXYS HiPreFRED and FREDs, in quite a few upgrades (my own and others'), with excellent result.

rodman99999
6,128 posts
 

    Updated Parts Connexion, discrete rectifier/PCB (etc) info; in case there's further interest.

    That MUR860 bridge should be quite an improvement, in a lot of amps.

https://www.partsconnexion.com/cgi-bin/sc/productsearch.cgi?storeid=*20b7b4534d0a875b77f1157d6bb78322a865&search_field=rectifier

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