[stump4545]

Can anyone recommend a tube vendors that knows Modwright gear.

I am new to tubes and I was thinking of upgrading my stock Tubes and not sure where to begin.

thank you.

[dminches]

Which gear do you have?

[MtnHam]

As a new owner of a Oppo/ModwrightTruth player with stock tubes, I too would like to know the answer to this question.

[stump4545]

I have a Modwright DM 36.5 and a PH 150 Phono stage ordered.

Does one even need to upgrade tubes on these?

thank you.

[Phil A]

There are some threads out there such as - http://www.audiocircle.com/index.php?topic=107968.msg1239790#msg1239790

[MtnHam]

Does one even need to upgrade tubes on these?
thank you.

Elsewhere, I have read that other owners believe strongly that significant improvements can be made with well chosen substitutes for stock, at least with the Oppo/Truth mod.

[stump4545]

Thanks for the link.

What about NOS?

Is NOS a worthy upgrade?

[dminches]

Do you mean NOS as opposed to new production? 

The DM 36.5 uses 6h30s.  There are NOS options for those tubes which could be an upgrade but they are very expensive, about $500 a pair.  Those would be the 6H30DR.  Be careful buying these since there are a number of fakes out there.  The rectifier is a 5AR4 which can easily be upgraded with any Mullard GZ34.  Modwright recommends doing that.

I haven't read much about the PH150 but any component which uses 6922s can be tested with NOS versions, usually with positive results.

[stump4545]

Are there any NOS of Mullard GZ34 out there, or any other NOS tubes i can use for Rectifier?

Is there any NOS to use for upgrade of Voltage Regulator Tubes in the DM 36.5 Power Supply?

[dminches]

There are tons of NOS Mullard GZ34s.

[stump4545]

Thank you Dminches.

Are there NOS of the Voltage Regulator tubes out there also, and is it worthwile upgrade to get NOS of voltage regulator tubes?

[stump4545]

I just opened up my Modwright LS 36.5 and pulled out this tube.

Can anyone tell me what tube this is?

Are these stock tubes or NOS?

Tube Newb.

[Phil A]

http://app.audiogon.com/listings/tubes-authentic-super-tube-6h30-6n30p-dr-6h30n-dp-nos-original-box-vacuum-tube-2012-09-14-accessories-27610

[stump4545]

does it make sense to upgrade these tubes in the Modwright 150 Phono Stage?

(2)6C45

and

(2)6922/6DJ8/7308


not sure if makes sense to upgrade 1 pair or both.....

any suggestions as which NOS I should upgrade to?