Signature Sound
Joule-Electra Information Library

Reproduced from old Joule-Electra Literature

OPS-4 Marianne Electra Memorial All
Tube Phono Stage

Joule Electra is introducing next preamp in the series dedicated to the memoriam to the Co-founder of Joule Electra, Marianne Electra Barber. This is phono stage, OPS-4 ME, that incorporates all the features that have made the OPS series of phono preamps the most sought after in Hi End Audio.

The new preamp is a highly refined version of the older OPS-2 which incorporates signal wiring designed specifically for Joule Electra by well known cable designer David Elrod of Elrod Power Systems. The signal wiring combines a combination of 6 nines silver and copper in a
unique transmission line configuration. Among multiple improvements, the signal path capacitors are a mix of V-Caps and Mundorf Silver, Gold and Oil which represents the very best capacitors available to the High End Audio Community. The “super chargers” in the power supplies are huge Mundorf M-TubeCap capacitors which combine a high degree of dielectric strength and low residual inductivity. These capacitors can supply, very quickly, extreme peak currents and can be heard and felt.

The OPS- 4ME with separate power supply is complete phono stage offering the committed vinyl enthusiast the platform of choice for playing records. Medium and high gain, for moving magnet or moving coil cartridges, all tube power supplies and the option of a volume control and
remote volume control, it can be complete, single function preamplifiers for the ultimate playback of records. OPS-4ME can also be used with a line stage LA-300ME. This extraordinary phono preamplifier is hand-built for a singleness of purpose and is full dual mono construction . If you only play records and you love the music in your record collection, the OPS-4ME with a volume control is the purest path those notes can take.

Specifications
Gain Selectable	High 62dB / Low 36dB
Input Impedance	High / Low 47,000 Ohms Alternate loading available
Output Impedance	1,000 Ohms
Output Voltage	7 Volts into 5,000 Ohms
Equalization	RIAA +/- 0.5dB
Noise	-60dB @ 2 Volts Output
Weight	Phono Stage – 10 lbs. Power Supply – 15 lbs.
Stored Energy	100 Joules
Dimensions	Width – 17 inches Height – 4 inches Depth – 9 inches
Tube Compliment	four- 5751’s, two – 6DJ8’s, two – 6350 and two- 6EM7

This historical information is provided courtesy Signature Sound.
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If I may chime in...I think this is a very good idea. The primary reason why I did not consider a Filarmonia is the lack of remote volume adjustment; a key tool when listening to music with huge swings in dynamics. So a power amp would allow matching a remote capable pre-amp...yay! 40 WPC would be a heck of a lot more versatile, but I'm no engineer. So YES to a power amp, but maybe a bit more oomph for output? BTW...weren't they also working on a interesting speaker system?

The synergy between these integrateds and the Merlins is really unbelievable! I have not hear them on any other speakers? I hated not having the remote but the sonics make it tolerable. I never thought the sonics of the ARS and Merlins would eclipse the Magnepans and Soundlabs I have loved for decades but I honestly believe this system is the best overall system I have owned over the decades. If they develop a separate amp does that mean that they would also develop a preamp to go with it. If they have their own speakers that might be the hot set-up. Rich, sure you have heard the new ARS speakers and you know the Merlins better than anyone else? How do the overall sonics compare?

For folks how are curious about the Ars-Sonum Canon speaker, here is a pic of one sitting next to a Gran Filarmonia to help give you an idea of the size/design. First order crossover design, 8 ohms, 94dB efficient, easy to drive impedance curve (great for tube amps), very high quality parts in the crossover, etc. It is a 2 way design.

After some discussion with Ricardo at Ars Sonum this morning, he is going to make a Armonia amplifier for us which should be here in October. The price may actually work it to be a bit more than the Filarmonia integrated as the more versatile optimized power transformers that may be used cost more to make than the ones in the Filarmonia integrated. It should look very close to the rendered/p-shopped image above. The Armonia will be a special USA (North America) only model as well.

Signature Sound Joule-Electra Information Library

Reproduced from old Joule-Electra Literature

OPS-4 Marianne Electra Memorial All Tube Phono Stage

Signature Sound
Joule-Electra Information Library

OPS-4 Marianne Electra Memorial All
Tube Phono Stage