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valves
24-12-2017, 13:09
Hi,

I have a Croft pre R S spec but with American octal valves.

Just wondering if stepped attentuators are worthwhile?

Thanks

vinyl
27-12-2017, 20:39
What's got you wondering?

Simon_LDT
28-12-2017, 15:30
I've got one of these in my passive: http://www.acoustic-dimension.com/attenuators/attenuators-main.htm

Superb and a big leap up from the tisbury I was using previously (I believe it uses a Dact 21-step).

hifi_dave
28-12-2017, 15:42
Many stepped attenuators have too coarse steps, so you often have difficulty in selecting the exact volume level you require.

valves
29-12-2017, 21:02
Hi,

Thanks for replies,

Noticed a few people recommending DACT in Croft pre amps.

I would need 2, so nearly £400.

I was wondering if it was a worthwhile modification.

Carl

valves
29-12-2017, 21:05
Thanks for the 41 step link.

IHP
30-12-2017, 08:32
Hi Carl,

I say with hand on heart, if I owned a Croft RS pre (and I did for a little while), I'd leave it as the designer intended and sit back and enjoy it. I just can't help thinking that a possible outcome is spending the £400, getting the DACTs fitted and then not really noticing any sonic improvement.

Genuinely not trying to be a bore in suggesting leaving all well alone - sometimes the best thing to do is nothing !

valves
30-12-2017, 10:51
Thank you.

walpurgis
30-12-2017, 10:59
I just can't help thinking that a possible outcome is spending the £400, getting the DACTs fitted and then not really noticing any sonic improvement.

I'm inclined to think the same.


Somewhat off topic, but if I had a spare £400 to play with, I'd be sorely tempted to try this: https://www.ebay.co.uk/itm/Glasshouse-tvc-preamp/112703369206?hash=item1a3da4eff6:g:7zIAAOSwT2daO8H i

Mixc
30-12-2017, 11:55
Hi, I ordered one of these last night.

https://www.ebay.co.uk/itm/Dale-23-Steps-Attenuator-2-Channels-Volume-potentiometer-10k-50K-100K-250K-500K/322590212161

I found that the volume pot on my Croft Epoch was not balanced 20kohm difference between sides, currently Ive bypassed the volume using resistors, big improvement. but no adjustment.

You could try using resistors to see how big an improvement a stepped device would give.

anthonyTD
30-12-2017, 12:24
Switching out the standard volume pots in the Croft to a stereo Stepped attenuator Ie; a Dact will definately improve the stereo imaging, and presence etc, High quality, well designed stepped attenuators are much more accurate than any conventional potentiometer.
Hi,

I have a Croft pre R S spec but with American octal valves.

Just wondering if stepped attentuators are worthwhile?

Thanks

valves
30-12-2017, 15:31
Are the DACT stepped attentuators worth the outlay? Would only want to change them once.

martian sunrise
30-12-2017, 20:50
Ive got them on my epoch, but I didn't have them fitted. The steps are big, but I'm not bothered by it

Mixc
17-01-2018, 16:45
Hi, I ordered one of these last night.

https://www.ebay.co.uk/itm/Dale-23-Steps-Attenuator-2-Channels-Volume-potentiometer-10k-50K-100K-250K-500K/322590212161

I found that the volume pot on my Croft Epoch was not balanced 20kohm difference between sides, currently Ive bypassed the volume using resistors, big improvement. but no adjustment.

You could try using resistors to see how big an improvement a stepped device would give.

My stepped pot arrived safely a couple of weeks ago, and is now installed. And I am listening to my revised system properly for the first time.
Everything seems to have come together, Ive made a few big changes recently. The most recent changes are the Stepped Pot and 3 ECC88s 1 Brimar and 2 Russian (VT Gold) for thr ARC

The system is a 301 with SME 3009, the VDH Linn Asak from Alan (Firebottle), through my modified Crimson Elektric (Head amp) to my Croft pre plugged directly into my ARC power amp, driving Focal Elektra 1028BEs.

Im listening to Paul Simons, Graceland album and ive never heard it so good....
The separation, detail and tonality have all improved dramatically.
So I can wholeheartedly recommend The £20 stepped pot in the above link as it should make a massive difference if replacing a standard carbon pot.

valves
18-01-2018, 00:46
Thanks getting near to a decision.

The Black Adder
18-01-2018, 08:04
I've used the Khozomo 48 stepped attenuator in my uber upgraded Croft Epoch Elite for years now. It's sound is amazing, it's build quality is second to none and it's price is very reasonable.

Hope that helps.

vinyl
18-01-2018, 10:01
I've used the Khozomo 48 stepped attenuator in my uber upgraded Croft Epoch Elite for years now. It's sound is amazing, it's build quality is second to none and it's price is very reasonable.

Hope that helps.

Likewise, it was from Jo's help and feedback that I had a Khozmo fitted to my Charisma X pre. Not being overly expensive it wouldn't hurt my pocket, should I not enjoyed it.

I think Marco had a Dact in his pre when we spoke (although it was over a year ago), and Anthony (Tube Distinctions) was very positive about them too when we chatted (super helpful as always) as he's mentioned above.

Simon_LDT
22-01-2018, 10:43
Definitely don't overlook the Acoustic Dimension 41-step, it has opened a window in my system. The big plus for me is the sense of space around the individual sounds/instruments and added depth to the sound.

Marco
27-01-2018, 20:34
Switching out the standard volume pots in the Croft to a stereo Stepped attenuator Ie; a Dact will definately improve the stereo imaging, and presence etc, High quality, well designed stepped attenuators are much more accurate than any conventional potentiometer.

Absolutely; there is simply no comparison, and the DACT attenuators are among the best. Khozmo are very good, too. Either, on the Croft, will sonically outperform any pot. No question whatsoever! :cool:

Marco.

valves
03-02-2018, 12:37
Thank you,

Everyone.