Preamps - Active, passive...???


I have seen a number of comments in magazines as well as on-line about preamps as an "unnecessary evil", (my words).

There are products such as Volume Controls and Passive Preamps that are supposedly designed to be as simple as possible; thereby changes to the signal are to be minimal. My question is, "Why then would you buy an active preamp, IF these "simplistic" devices are "better""?

Let me state that I am not ridiculing anyone for there purchases. I am in a state a flux in my stereo and the preamp department leaves me scratching my head. Such as, is something simple, such as a Plactte passive the way to go or a highly rated active preamp.

Thanks in advance for your comments.
brianmgrarcom
I've had passives for ~10 years now. I keep trying pre-amps from CJ, Krell, ARC, Levinson, and others. Some are nice but a well made passive in my system is more open AND more dynamic than ANY of the active units.

I've come to the conclusion that if an active line stage is required then there is something wrong with the system, typically the source component. Case in point : My Pioneer DV-05 with its wimpy power supply sounds better working into my MF X-Can v2 as a preamp than it does working into the passive. There is some loss of detail but the bass is better and presentation is punchier & more involving. However, my Muse 9 Sig definately sounds better working into the passive.

The source components need to have low(under~200 ohm)output impedances AND be able to source some current into say a 2K ohm load.

Not all passives are the same. I've had the Adcom line controller, Line Drive, Line Drive Deluxe, & TLC-1. However, my Reference Line Premminances 1 & 2 are the best by far. Full of bloom, detail and shocking dynamics (actually, they let all of that stuff thru without editorial change). They are cheap too (~$600-800 on the net)which makes them a low cost/risk try out. I'd love to try the Adcom GP750.

I've driven a passively bi-amped settup with over 6 meters of combined cable length with no problem. Just don't use funky cables with funky boxes & stuff and make sure your amp(s) has about 26 DB or more of gain.

Good Luck
I was on a search for a new preamp to replace a veiled and closed-in sounding Rotel RC995 and tried the CJ PV14 (tubie and slightly rolled off), Krell KRC-3 (dynamic yet slightly grainy and expensive), Linn Kollector (worse than the Rotel, wooly and fatiguing), Musical Fidelity A3cr (fairly transparent, a little bass bloom) and Levinson 380 (bright, grainy and expensive). Finally I tried the Placette Passive Line Stage and it was the only thing that didn't muck up the sound in some way. Some of the other preamps are quite good, like the MF A3cr, but all I was looking for was something that was sonically transparent (smooth extended highs, clean natural mids and deep powerful bass) to switch sources and change volume. This might not work in all setups, ie. 20ft interconnects to your amp, but if your ics are under 2m and your components can drive your amp louder than you'd ever listen, why not go with a quality passive?
Never used a passive preamp, but tried my Monarchy DAC, which, says the manufacturer, was designed for direct-to-power amp, straight into my Meitner STR-55 driving 93 dB Tannoys and quickly switched back to my active preamp. The system had enough volume without using the preamp, but as others have observed, bass was flabby and muddy (if loud) and dynamics severely compromised. Has anyone tried the Meitner Bidat direct-to-power amp? Regards, Joel Tatelman
...Dr joe made a good point for passive preamp lovers:
It is true that you can compromise at high volumes in details and dynamics. Depending on your speakers, it can be any part of sound bandwidth especially bass.
Since I do not turn on high volumes, I realy enjoy the passive preamp's transparency.
The best preamp is no preamp. I am useing Wadia 16i directly connect to Classe CA400 to drive Eggleston Andra speakers. It is very transparent. Less is more.
I tried to insert a very good preamp BAT VK50SE in my system, it didn't increase the dynamic, which proof to me that less is more! Also please remember that additional gear in the music loop only will degrade not improve the sonic quality!