General Initial Impressions--Genalex Gold Lion KT88 Reissue


I've been on a tear of tube rolling with no end other than to try things out and see how I like them.  

I am trying out the Genalex Gold Lion KT88 reissues--8 of them--in a Primaluna Dialogue Premium HP integrated.  I mated them with 4 Cifte 12AU7s and 2 Baldwin (likely early 60s) 12AU7s.  

I made the mistake of not changing my selector switch from EL34 to KT88 during the first 20 hours of listening to the Gold Lion KT88s.  Regardless, I thought they sounded pretty great out of the box with the EL34 setting.  

It's still early in the process so I'm not 100% certain of everything. My initial impression is that these offer the sweetness of EL34 midrange while extending most of the sound spectrum.  There's a good bit of air on the top and mid to upper level detail is superb.  Compared to the EL34 reissues, I think the bass is a touch softer yet more defined--yet this is early and I need to compare with recordings that are tattooed on my aural memory before making final conclusions. 

Overall, I'd say this reissue is a damn fine tube.  I'm not finding any noticeable shortcomings or faults.  Everything is musical and enjoyable.  Smooth is the order of the day with this tube, yet it's not sleepy or droopy. It's a nice mix, in my mind's eye, of vintage and modern.  I really like them.  

I bought a matched octet from Upscale, but I didn't have these cryoed like most others I've bought. 

I'm super curious to hear about other users' experiences. 
128x128jbhiller
I am with Jond on this. The Gold Lion kt77 is an awesome tube. I tried many el34 variants and the GL kt77 tube sounded the best by far in several different el34 based amps. The kt77's, I felt, sounded better than more powerful tubes from that brand and line. Really nice, open, extended warmth, tight and punchy. Well worth the little extra money they typically cost. (I have no affiliation with Genelex)

@andyz

I completely agree. The KT77 beat out the reissue el34 Mullard and the Primaluna el34 in my system. I do like those el34’s, but the KT77 are in a different league.

I have the Primaluna Dialogue Premium Integrated amp
A couple of questions since I'm going to purchase a PL amp in the ne t couple of weeks. 

1. Is Cryogenic about extending Tube life?

2. Are the Primaluna brand tubes a good start to experiment with. The amp I am looking at comes with KT88's. I'm also thinking of a set of basic EL34s to see which I prefer. I was going to but the PL house branded tube or the Mullards. 
I think the PL are decent tubes to start with as they are voiced for the amp. If there is something you don't like about the sound then you can change to tubes. Just my 2 cents.
@samzx12 

Great question-- Can you please tell me what were your initial impressions of the GL KT88 and what didn't you like about the stock EL PL EL34?  

I found replacement reissue Mullard EL34s to be better than the PL EL 34s.  I was really impressed with them.  They were rich and creamy in the midrange.  I think the GL KT88 may have a bit more range across the spectrum, BUT I need to go back and hear them again.  Honestly, both the Mullard reissue EL34 and the GL KT88 seem better than the stock PL EL34.  I think the stock PL was well behaved but didn't draw me in too much.  I'm going to have to go back and compare the 3 over a few sessions though because my aural memory fades after about a week or two.