Ear 834p Owners Manual
I have been contemplating a phono stage upgrade from my EAR 834P and MC4 transformer, and have compared it to a couple of highly rated phono stages. My 834P is un-modded, apart from using JJ 12AX7 tubes. The MC4 step up is a major upgrade over the internal transformers, but effectively doubles the price of the 834P. I am using it with a Nottingham Ace Spacedeck, Micro Seiki MA505 arm and Koetsu Rosewood cartridge. A few weeks ago I borrowed a Tom Evans GrooveX, which had adjustable loading and capacitance. This is a very highly regarded phono stage but I found it severely disappointing. While it was extremely quiet and tonally neutral, it lacked real dynamics.
Guitar strings, cymbals, drums all lacked that speed and snap that vinyl does so much better than CD. While initially impressive, I gladly returned the Groove after a few days. Over the last few days I have been listening to the Einstein Turntable's Choice. This is about 50% more expensive than the 834P/MC4 combination and has been getting rave reviews, regarded as comparable with some of the best phono stages at any price. It comes with a number of different impedance plugs so that it can be matched with any cartridge. The Einstein TT is much better than the Tom Evans stage. It produces dynamics as well as a rich, liquid sound, and is extremely quiet and resolving.
A few months ago, I got myself an EAR 834P w/ the volume pot. The (3) tubes are stock & bear the logo of EAR. The spartan manual states that the (3) tubes.
This time the comparison with my 834P/MC4 was not all in the EAR's favour. The EAR phono now sounded a little noisier, with a little more hash and grain, while the Einstein sounded smooth, quiet and liquid. I was almost ready to order the Einstein. However, again I had some subtle misgivings, which I couldn't quite put my finger on.
So I made some 24/96 digital recordings of both and switched back and forth between the files. The Einstein is dynamic, but I felt that the EAR - despite being a tube design - was just a touch faster and more rhythmic. The Einstein is also darker sounding (the 834P has a reputation for sounding dark, but the MC4 brightens it up considerably), and its 'liquid' sound was just a little overdone - I normally like a smooth, liquid sound, but here it seemed as if all the intruments were connected in one 'flow'.
The 834P/MC4 gave instruments their own space and a better defined sense of texture, even if the Einstein had better resolution and was quieter. At the end of the day I preferred the EAR 834P and MC4 step up. The Einstein Turntable's Choice is an excellent phono stage and I could easily live with it. But I felt that the EAR combination was, for me, more musical. Obviously, this is a personal view and other people will have a different take. I guess it also goes to show that the 834P is a remarkable design at its price. Even in stock form it sounds truly excellent (although it has a few detractors).
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Add a great transformer, such as the EAR MC4 and it is comparable with phono stages costing a lot more, and may even be preferable, depending on your tastes. Rather than looking for a new phono stage, I am now planning to have my 834P modified by upgrading the capacitors and resistors - hopefully this will increase its resolution and reduce its slight amount of grain, to the point where it is much better than the competition. Again, this comparison was made using my equipment, my ears and my preferences, and should not be taken as definitive. Nevertheless, I hope it may be a useful data point for anyone contemplating buying any of the phono stages mentioned above. Interesting, a friend who borrowed my Einstein and did the same comparison bought an Einstein. The Einstein benefits from being fully broken in and from left on continuously.
Likewise the choice of power cord is extremely important. The one supplied with the unit is somewhat better than most stock cords but severely limits the performance of the unit. Likeise, the unit benefits from isolation. Two hard footers combined with one more compliant footer under the separate power supply is much better than the stock excuses for feet. Placing three Walker lead pucks on the top of the power supply also yields audible improvements. The Einstein when properly tweaked is superb, at least to my ears. Unfortunately, even well designed components benefit from some after market tweaking, particularly with respect to power cords and isolation.