These tube comparisons were found from different sources on the internet. I use these as a general guide when comparing tubes of different types. These tube "ratings" offer some insight into what type of fidelity one can expect when using them in the amplifier of their choice.  Enjoy.............

6DJ8 Bugle Boy: Similar to the orange globe logo with more ambiance and larger soundstage.

6DJ8 Holland Orange Globe: Has a little bump in the midband which adds immediacy to this tube. A harmonic rightness with the orange globe.

7308 Orange PQ: Sound very similar to the Orange Globes.

7308 White PQ: Another very good PQ. All of the PQ’s have a similar sonic character.

7308 USN: Typically 60’s vintage. Great extension without the tizz. Liquid smooth fabulous bass.

7308 Orange Globe USA: More focused and palpable than the Bugle boy or A frame 6DJ8’s. Similar to the globe Logo from Holland. 6DJ8 from Holland is very close.

6922 JAN White Label: Very Good tube. Quiet, great speed and dynamics, and very wide bandwidth.

6922 White Label PQ: Warm yet lively, focused grainless and transparent. Dynamic with punchy bass. One of the best!

6922 White Label USN: Sounds very much like the white label PQ. May lack some of the tubes warmth and body.

6922 White PQ Holland: Slightly more forward mids than the US version. Otherwise….very similar.

6922 Pinched Waist White PQ: First version ever made. An absolutely gorgeous sounding tube. Lively transparent and detailed with extended highs but without a hint of grain. Dynamic and punchy with liquid mids!

ECC 88 Orange label A frame: Middle of the hall presentation with very good frequency response. Sweet top end and mids, excellent low level detail and wide soundstage. A bit more up front than the bugle boy. Same signature as the orange label, just cleaner faster, and a little better in every way.

ECC88: Nice dynamics and presentation. Light on the top end, good bass and soundstage.

E88CC: Many labeled RCA Very musical nice speed and dynamics, sweet sound with nice ambiance.

E188CC: Very hot tube. This tube shares a lot of traits with the Amperex 7308’s. This is one of the finest.

E288CC: Another classic from Germany! Very transparent, and palpable with good bass. Very "real" sounding presentation.

CCA: Yet another classic German tube with all of the traits of the above. May lack a little in bass.