RIAA Comparisons

jackinnj · 25th January 2006, 06:51 PM

I got the very dusty Hafler DH-110 preamp off the basement floor and put it through its RIAA paces -- here's how it compares with my tube RIAA preamp (Jack), Koren's PAS3 mod, the Tritschler Passive RIAA (Trit) and simulated response for the Audio Research SP8.

What a wonderful button on the Boonton 1120 analyzer -- you hit "ratio" and "dB" and can make curves like this:

lineup · 25th January 2006, 06:59 PM

wonderful!

so which is your ultimate RIAA of all these?

jackinnj · 25th January 2006, 07:11 PM

i like the tube RIAA which I built myself -- pride of ownership I guess -- the Hafler is certainly pretty acurate for a preamp which goes for around $35 to $100 on EBay.

lineup · 25th January 2006, 07:18 PM

Looks as Trit and Hafler use another type of low freq response.

Otherwise is most everything within +- 0.1-0.2 dB.
This is probably not possible to hear.

If you would use 1dB scale, your curves would be almost totally flat.

25th January 2006, 06:51 PM	#1
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	RIAA Comparisons I got the very dusty Hafler DH-110 preamp off the basement floor and put it through its RIAA paces -- here's how it compares with my tube RIAA preamp (Jack), Koren's PAS3 mod, the Tritschler Passive RIAA (Trit) and simulated response for the Audio Research SP8. What a wonderful button on the Boonton 1120 analyzer -- you hit "ratio" and "dB" and can make curves like this:

25th January 2006, 06:59 PM	#2
lineup diyAudio Member Join Date: Dec 2005 Location: the north	wonderful! so which is your ultimate RIAA of all these? __________________ lineup

25th January 2006, 07:18 PM	#4
lineup diyAudio Member Join Date: Dec 2005 Location: the north	Looks as Trit and Hafler use another type of low freq response. Otherwise is most everything within +- 0.1-0.2 dB. This is probably not possible to hear. If you would use 1dB scale, your curves would be almost totally flat. __________________ lineup

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25th January 2006, 07:11 PM	#3
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	i like the tube RIAA which I built myself -- pride of ownership I guess -- the Hafler is certainly pretty acurate for a preamp which goes for around $35 to $100 on EBay.

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