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SmokinJoe

Integrated amp pairing with a preamp and/or power amp

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HI all

I recently purchased a Rega Elex R integrated amp. I am really happy with the sound but would like to experiment with a tube pre- or power amp.

 

My question is does anyone know if I can:

 

1 - Add a tube power amp to the pre-amp output and use the Elex R as a pre-amp only

 

2 - Feed a tube pre-amp into one of the Line-in jacks and use the Elex R as a power amp only. If so does this bypass the Elex R pre-amp.

 

I've added a photo below. Grateful for any advice.

Screenshot_20180420-174515.png

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8 minutes ago, SmokinJoe said:

HI all

I recently purchased a Rega Elex R integrated amp. I am really happy with the sound but would like to experiment with a tube pre- or power amp.

 

My question is does anyone know if I can:

 

1 - Add a tube power amp to the pre-amp output and use the Elex R as a pre-amp only

Yes.

 

8 minutes ago, SmokinJoe said:

 

2 - Feed a tube pre-amp into one of the Line-in jacks and use the Elex R as a power amp only.

Yes.

 

8 minutes ago, SmokinJoe said:

 

 

If so does this bypass the Elex R pre-amp.

No.

 

8 minutes ago, SmokinJoe said:

 

I've added a photo below. Grateful for any advice.

 

You're most welcome.

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you need the elicit-r I think with ht bypass to use just as a power amp :)

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9 minutes ago, Zaphod Beeblebrox said:

Yes.

 

Yes.

 

No.

 

You're most welcome.

Thanks Zaphod. I am a big fan of precise and efficient advice.

One more question on point 3: is there a disadvantage if the tube pre-amp and Elex R pre-amp run in series before hitting the Elex R power amp. That is, will the ambience added by the tube pre-amp be flattened by the Elex R pre-amp?

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14 minutes ago, :) al said:

you need the elicit-r I think with ht bypass to use just as a power amp :)

Hi al

I did like the Elicit. Does that meant the ht bypass separates the pre-amp and power amp in the Elicit?

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2 minutes ago, SmokinJoe said:

Hi al

I did like the Elicit. Does that meant the ht bypass separates the pre-amp and power amp in the Elicit?

it does yes, whack in ht bypass and it works as a power amp. bypasses the pre amp stage :)

 

 

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Hi mate maybe post what

tube pre/power amps you use and your findings?

i have an Elex-r that replaced a SE kt88 amp, i didnt want to admit it at first but the Rega sounds better to me. Alot more

punch/drive. The valve amp was a Tubelab design running big edcors, the only thing my valve amp did better was acoustic stuff and some but not all jazz.

 

The elex is a bloody good amp. 

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3 minutes ago, Andrews_melb said:

Hi mate maybe post what

tube pre/power amps you use and your findings?

i have an Elex-r that replaced a SE kt88 amp, i didnt want to admit it at first but the Rega sounds better to me. Alot more

punch/drive. The valve amp was a Tubelab design running big edcors, the only thing my valve amp did better was acoustic stuff and some but not all jazz.

 

The elex is a bloody good amp. 

Totally agree. I had planned to get separate pre and power amps but I just didn't find a combination to beat the elexr near the price. Will let you know how I go with the tube amps.

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Guest Eggcup The Daft

If using the Elex R preamp output, make sure the power amps match to it. I remember a thread from a couple of years ago, where the Rega Brio preamp output levels were too low for some power amps.

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1 minute ago, Eggcup The Daft said:

If using the Elex R preamp output, make sure the power amps match to it. I remember a thread from a couple of years ago, where the Rega Brio preamp output levels were too low for some power amps.

Thank Eggcup. I imagine the only way to test is to plug a power amp in?

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26 minutes ago, :) al said:

it does yes, whack in ht bypass and it works as a power amp. bypasses the pre amp stage :)

 

 

Would I be right in assuming an ht bypass can't easily be retrofitted?

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Guest Eggcup The Daft
20 minutes ago, SmokinJoe said:

Thank Eggcup. I imagine the only way to test is to plug a power amp in?

If you can find the relevant numbers for the output and input, ask a question in the amplifiers and pre-amps forum and I'm sure someone will quickly answer.

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14 hours ago, SmokinJoe said:

Thanks Zaphod. I am a big fan of precise and efficient advice.

One more question on point 3: is there a disadvantage if the tube pre-amp and Elex R pre-amp run in series before hitting the Elex R power amp. That is, will the ambience added by the tube pre-amp be flattened by the Elex R pre-amp?

I guess it depends on what you are attempting to achieve. 
 

If you are attempting to accurately recreate the original musical event as closely as possible (aka: High fidelity), then applying another preamp to the input of a preamp can only serve to DECREASE accuracy.

 

If, OTOH, you are trying to achieve something else (say: Stripping detail and important musical information from the signal), then placing another preamp in series with the existing one will probably do just that. 

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14 hours ago, SmokinJoe said:

Would I be right in assuming an ht bypass can't easily be retrofitted?

Depends on what you mean by "easily". Several holes need to be drilled in the chassis, sockets fitted and then the tech needs to figure out the best part of the circuit to break into. I'd reckon the cost would somewhere North of $200.00 for a decent job.

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14 hours ago, SmokinJoe said:

Would I be right in assuming an ht bypass can't easily be retrofitted?

I would t suggest so. In my opinion. Given popularity of these units. You are better off to flog off and pick up the model up with the feature built in. Or better still just buy the power amp version if that’s all need.

 

modifying and getting the existing unit rigged up to do something wasn’t designed to do can be hit miss and also unpredictable what outcome will be for resale. Some won’t want to touch a modded thing. Some might pay extra, can be gamble in my opinion. When off shelf straight replacement options there for what you are looking to do :)

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18 hours ago, Eggcup The Daft said:

If using the Elex R preamp output, make sure the power amps match to it. I remember a thread from a couple of years ago, where the Rega Brio preamp output levels were too low for some power amps.

I'm pretty sure the Elex R preamp is passive.

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I have tried that on half dozen different mid-fi integrated amps, some times the sound can appear better and others not.

 

The several times it worked with a better preamp the treble extension got more detailed, sweeter and more melodious. Other times when it did not work it got very muddled, something wasnt right, volume reduced etc. Ultimately though in most of those attempts using that quality of amp I later preferred dedicated power amps on the preamp.

 

If the amp has a passive or active volume pot it may work better by adding another preamp externally. There are power amps that have a simple volume pot and are meant to be connected to an external preamp, but can be used as is and sound quite good. In those situations adding a good external preamp can really make it sound very good and can control system background noise if it’s a problem.

Edited by Al.M

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