Hej alle.

Er der nogen som har erfaring med mullard rør i croft forforstærkere?

Jeg tænker på de senere mullard rør fra 70 ´erne.

Matcher de godt til croft?

Der er tale om ecc81 rør til line indgangen.

På forhånd tak.

Hilsen
Johannes

Hej Johannes

Croft bruger dem selv så hvad tror du....

Hilsen Ole

Hej Ole.

Tak for dit svar.

Jeg har selv en croft rørpre og der et GE 5965 installeret.

Det er dette rør jeg vil erstatte med et mullard ecc81 rør.

Jeg har ikke rigtig nogen erfaring med mullard, så jeg prøve at samle lidt info.

Har du hørt mullard i croft?

Hilsen
Johannes

Hej Johannes

Min var født med mullard.  Idag foretrækker jeg mullard rør men Rør er en subjektiv oplevelse  så her er en rettesnor

upper midrange screech that current production tubes are famous for. Here are some VERY GENERAL observations about some of these vintage tubes:

TELEFUNKEN, SIEMENS, VALVO, LORENZ, and other German made NOS: These tubes are usually characterized by an impressive open "air" at the top end. The soundstage is large, even in mono applications these tubes have a great 3-D image. The midrange is ruler flat, and the bass is tight and accurate. These tubes have a fine sense of dynamics, and most are impressively quiet. These are not "warm" tubes, and to some ears their lack of midrange warmth may be heard as bright. I tend to think of them as accurate, and their clean, focused sonic image is astonishing. My personal favorites. For critical phono or microphone preamp needs, grab the rare Telefunken or Siemens ECC801S before they are gone! They are absolutely incredible tubes that will never be made again!

AMPEREX, PHILIPS, MAZDA and other Holland/France/Belgium made NOS: These tubes are a great balance of a clean, airy top end, nice midrange warmth, and accurate bass. They are very pleasant, clean, and musical to listen to in hi-fi applications. Unlike other clean European tubes, these break-up impressively when overdriven in a guitar amp. The rare longplate versions are the same, but with even more soundstage space and detail. The Mazda adds a nice bit of dynamic punch to the sound.

MULLARD, GENALEX, BRIMAR, and other British made NOS: Like a warm British jacket of the finest tweed, these glorious tubes have an attractive sweet warmth in their midrange and lower regions. The top end is silky and pleasant, without being rolled-off. The best of these tubes retain a fine sense of "air" at the top, and the upper midrange is smooth and liquid. These tubes reproduce the human voice, especially female voices, with haunting realism. The rare D-Getters and Genalex versions have an eye-popping huge soundstage, razor sharp focus and detail, and an uncolored top end while retaining the warmth of the lower priced versions.

RCA, RAYTHEON, GE, SYLVANIA, and other USA made NOS: This group is very diverse. The RCA, Raytheon, and Sylvania blackplates are among the best here. These are very musical tubes with air and sparkle at the top end, warmth in the mids, and great bass. The RCA are drop dead beautiful in guitar amps, even the lower priced greyplate and longplate versions. They also have a wonderful "phat" gritty sound when overdriven in these amps. The blackplates and most tubes made for organs are very quiet. The greyplate GE is an all-around nice-guy tube to listen to, the blackplate here possibly getting the nod for hi-fi use. The Sylvania greyplate and military versions are clean and a bit bright, but the Sylvania 6201 variants are very balanced and pleasant to listen to for hours. The RCA 6201 and 5965 is more like the Mullard, with a rich warmth and wide bandwidth. Currently, the USA made tubes are a nice surprise with their low prices as compared to the European types.

Hej Ole.

Tak for beskrivelse. Lyder godt med mullard synes jeg.

Jeg er specielt interesseret i et godt punch i bassen - er det din erfaring, at det er tilpas tryk i bassen med mullard rørerne?

Hilsen
Johannes

Hvis resten af dit anlæg har bas er det ikke røret der er problemet.

hilsen ole