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In Reply to: RE: Are Passive Pre-Amps Lacking at Lower-Mids Compared to Active Pre's posted by waj4all on May 14, 2011 at 19:50:37
...for about 10 years now - Wadia CD player connected directly to my Manley tubed amps.Midbass and lower midrange are just fine.
It is all about system matching and there are few absolutes. Try it and hear for yourself.
Personally I don't care much for Salvatore or Stereo-Mojo.
Anyone can find just about anything they want on the internet these days.
Edits: 05/15/11Follow Ups:
Wadia 850 partial specs:
Single-box CD player with remote control, digital-domain volume control with 24-bit precision. Maximum output level: adjustable from 250mV to 4.4V to optimize volume-control action (4.4V RMS default). Measured frequency response: -3dB at 20kHz. Output impedance: <15 ohms.
You have a CDP capable of higher than typical output voltage and a robust low output impedance. This is perfect for a passive linestage setup or no linestage at all in your case. You have a very robust signal to drive the next stage with great dynamics and no loss of resolution in the excellent volume control.
Similarly, a CDP with a less than stellar volume control (or no volume control) but robust output signal is still a good candidate for a passive setup. By cranking the CDP volume control up 100% (essentially bypassing it) and using a passive linestage with higher quality components can yield similarly excellent results.
Your amps are spec'd with an input sensitivity of 1v for full output (high sensitivity), 30dB gain (lots of gain), and have sufficient intrinsic lower-midrange presence and overall warmth (EL34 tubes, love em!) to not need the added "coloration or enhancing" by an ACTIVE linestage with so called "better lower-midrange".
You just killed that myth!
It's about System Synergy.... what I have been saying all along and your system is a perfect example!
(nt)
Hey Mkuller,
Try it? Been there & done that too (for quite a number of years, actually). Sounded great - still does - but.........
What more can I say?
Enjoy the music.
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