Tube monoblock power amplifier.
Adaptive AutoBias circuit improves performance, lowers distortion, and eliminates the need to adjust tube bias.
SoftStart circuit extends component and tube life.
Point to point internal wiring, premium parts, and five coats of hand-rubbed finish on heavy-duty chassis. Removable cage. Solen capacitors and fast recovery diodes.
Unique dual-feedback topology. All the benefits of feedback, without the drawbacks.
New output transformers can handle even the most difficult speaker loads. A 2 Ohm tap is added in addition to the 4 and 8 Ohm.
Conservative design uses four KT88 tubes and can substitute EL-34, 6L6GC, and many others.
70 watts per channel
Summary: Just what the Dr. ordered ProLogue Sevens, we let them burn for 48 hours before we even sat down for a listen and was I ever happy we bought them.
Same smooth, detailed sound we were used to with the ProLogue 5 stereo amp, only seemed to have a larger sound stage with better separation. These are hands down the best amps you can buy anywhere at this price or even twice the price I researched different tube amps for almost a year before I decided on the sevens. If you want a tube amp that you do not HAVE to mess with all the time or worry about a tube failing and damaging something else on the amp THESE ARE FOR YOU!!!!
Strengths: Sound.
Build Quality.
Ease of use.
Looks.
VALUE.
Weaknesses: NONE
Similar Products Used: Classe, Marantz, NAD, Simm, Parasound, BAT.
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Rating Reviewed by: Roger Cook(Unregistered User)
(Audio Enthusiast)
Review Date May 16, 2007
Overall Rating 5 of 5
Value Rating 5 of 5
Used product for 1 to 3 months
Review 2 of 8
Price Paid:
$2695.00
from Upscale Audio
Summary: We have had the ProLogue for a little over two months now with around 75 hours on them and they continue to improve every time we listen. My wife and I started with a ProLogue 5 over a year ago because they were not making a monobloc amplifier at that time, as soon as I noticed the sevens I knew it was only a matter of time before they would be in our system, boy was it worth the wait they seem to have opened up the soundstage with our system and are very dynamic! Plus if you are new to tubes these are very user friendly you will never have to bias a tube or worry aboout buying matched power tubes EVER due to the adaptive auto bias circuit and the Sevens look very nice. The Prima products seem to be very accurate, that is they do not add any colorations to the sound. We love them!!!!!!
Strengths: Sound.
Build quaility.
Looks.
Ease of use.
Weaknesses: NONE!
Similar Products Used: McIntosh
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Summary: Primaluna prologue 7 monoblocks---how sweet it is!
Amazing amps for this kind of price tag-or at any price for that matter.
If you seek amazing highs and lows.and great bass as well,these amps
from Primaluna offer sound reproduction as good as it gets at this price level-
and as good or better than amps double and triple the price in my opinion.
I am driving B&w 804s-90db speakers with the monoblocks,and I couldn't ask
for a sweeter sound.The primaluna prologue 3 preamp is a wonderful
combination with the prologue 7's as well.P rimaluns mates exceptionally well with the B&w's--like velvet. Kevin Deal at upscale audio really knows how to treat
customers right----I believe he is the main distributor of Primaluna---
He is extremely knowledgable-as is his staff--and a pleasure to deal with.
Primaluna-B&W-and Upscale Audio-it doesn't get any better---
Strengths: exquisite highs,lows,and everything in between
exceptional build quality-point to point wiring
Weaknesses: dont waste time looking for weakness-there are none.
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Summary: Well I've had the Amps for 2 weeks and I have to say that I'm blown away by the quality of build and the improvement in sound in my system. I am running the midrange tweeter panels of my vintage Infinity RS1B's with the Progogue 7's and have my trusty Krell KSA 200s on the woofer panels.
The thing that really struck me was how the music was completely freed from the confines of the speakers...its really uncanny, the speakers seem to disappear like never before. This has made the music so much more involving. The soundstage seems to have completly opened up broken the bounds of both the speaker and the room. The width and depth is breathtaking revelation to me in my system.
Strengths: The ability to free the music from the boundries of the speakers.
Vocals are superb on these amps. I have had decent vocals in my previous set up (ARC VT100) but not as refined as the Prologue 7's.
They seem more powerful than they are rated. They drive the RS1B's mid/tweeter panels with ease and agility.
They put the music in the room like nothing I have ever had in my system. The sense of air around the musicians is 1st rate.
The build quality is superb and the price is a bargain. I had been auditioning amps (in my system) at nuch higher prices that were bettered by the Prologue 7's in both sound (in my system) and value.
Weaknesses: None that I have seen.
Similar Products Used: Conrad Johnson MV 75-A1
Audio Research VT 100
Conrad Johnson MV 60
Audio Research VT 100 -Mk3 (audition only)
Antique Sound Labs Hurricane (audition only)
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Summary: The Prologue seven monoblock
amps from primaluna are incredible.
The sound reproduction is virtually perfect,with a very sweet midrange,
incredible highs,great tight bass--not that common with tube gear.
These monoblocks give all the best attributes of solid state in terms of
no maintenance-as tubes are self biasing--on auto pilot if you will.
I have had no problems what so ever with this gear-and would highly recommend
the product-especially for the price level. My neighbor has tube monoblocks
costing 3 times the price-I would take the primaluna hands down.
The combo of the prologue 7 with the prologue 3,in my humble opinion,is
unbeatable.
Strengths: No maintenance-self biasing tubes,well made product-sturdy,point to point wiring,
incredible sounding across the board-----midrange,highs,and lows.
Not expensive relatively speaking. Many people feel 70 WPC is too low to drive
certain speakers.However-I drive Vandersteen signature 2ce-86db-with
no problem at all.I also drive Paradigm Studio 100 v3 speakers-also no
problem at all. The 70 wpc is more than ample--on virtually any speaker.
Weaknesses: None-----none what so ever-it's that simple.
5 of 5
5 of 5
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