No a western electric one steve, one of the current spec reissues. There is a EML one going for reasonable money.
Hi Hens.
I've had some issues with two EML274B rectifiers (in a preamplifier so they were only used lightly).
The first capacitor must be less than 4uf, but more importantly the output impedance of the power transformer must be high.
With your DAC unplugged from the mains the rectifier tube removed measure the DC resistance between the two HT wires (pins 2 and 8 ) of the rectifier socket) If this is less than 160 ohms (DCR) use resistors in series with the HT wire to increase the DCR. In my preamps I use 5 watt 100 ohm wire wound on each pin ( 2 & 8 ) to limit the in-rush current. It's a bit of overkill but with a preamp the current draw is quite minimal so there is hardly any voltage drop across the resistors.
Another issue with EML I found was warranty. I returned both tubes and sent several emails, in the end they just ignored me, and never sent any replacements. I notice they now have many warnings on their web-page regarding the use of their rectifier tubes.
I initially had the rectifier setup with a 2.2uf pio then 10henry choke, another 2.2uf pio followed by a 20h henry choke, then a 47uf electro. Any known rectifier should have coped with this setup as I was only running 275-0-275 vac less than 20ma.
Personally I'd go for a 5R4 brown base, or CV417
http://cgi.ebay.com.au/Mullard-5R4GY-274B-CV717-carbon-plates-MINT-suit-Leak-/300495282959?pt=UK_Consumer_VintageAudio_RL&hash=item45f6ea230fCheers, Earle.