Is this tube sound????

You need to be careful.I sold original B&W 803 Nautilus. which are rated 90db +/- 3db.But a nasty impedance swing from nominal 8 ohm load (stated) dropped precipitously to 3.5 db and would eat my 4 watt EL34 40 watt which would run a 8 ohm to 6 ohm bottom speaker with aplomb.With power more is better and tubes given thier cost can end up with some disappointing matches.On other hand if you get to a pus pull tube amp rated at 80-120 (how about used Rogue 120's?) clip more softly and would run insensitive or fine low impedance.Thus many folks opt for tube pre's and SS amps.But if you can afford it step up to used Rogue,Quicksilver,ASL Hurricaines,VTL's etc which offer sane prices for watts provided.Tube rolling NOS is fun for pre's but cost prohibitive for output (though no driver tubes) in power amps.But some have better sound than other.EL34's are great for acoustic music and vocals,more expensive KT88's have better dynamics even at "X" rated power than other tubes.6550's are cost effetive.Get some separates and be it mix of solid state or better tubes all (over 20 years I have ad all iterations as other things in system or my whimsy changes).Alas it comes down to cash but even with "intro" Jolida you'd have liked,I think,all tubes if your speakers could have used ammount of power,to get that warm tube sound even though you might have sightly less tight bass and tightly rolled off highs.An all tube sperates or integrated (love my EAR 834 and buddies Cary SLi80 Integrateds)with speakers that work well with tubes and are your into music other than all heavy metal.
G'luck
Chazz

I'll probably start something, but IMO, if you want to know what tubes sound like, you need a tube AMP! The preamp can be to taste. This because the sonic character of a system is determined first and foremost by the speakers (natch!) AND the amp. Everything else has its effect but secondary to those two. There's nothing wrong going with an integrated, but if you want tube sound, then the amp section needs to be tube.

If you want to hear a truly great hybrid amp check out the Pathos. You may get your cake and eat it too. It's more expensive then the Jolida but refined and will drive almost anything out there. There are other very good integrated amps the ONix SP8 40(EL34) watts integrated (Nice), the Cayin (Nice) Prima Luna (Nice). I have a Jolida 502 and I'm moving it very soon. My Modified ST 70/Sound Valves input board tweaked and additional mods done by Tom Tutay and a VanAlstine Super PAS3si sounds marvelous compared to the 1501 and several other amps I have heard. I have heard many amps make the Totems sound good. I think the Pathos will make them sound great. The other amps I mentioned will be close as well. They are in good company.
I'm even driving a pair of Magnepan MG12's and I'm pleased.
The JoLida you have well I'm not surprised you have the hardness and you don't like the top end. Afterall it is a solid state amp. Check out the Pathos you may be in for a real ride.

I owned the JD1501A a while back and had the same experience with the stock tubes. Don't give up on it yet, as its sound does change enormously with tube rolling. What tubes will work best for you is of course system dependent, but I had great luck with a pair of NOS GE 5751s from Upscale Audio. They're bargains for NOS ($20 each matched) and resulted (in my system) in a very balanced, sweet sound from top to bottom. Svetlanas are $10 each and are said to sweeten the mids/highs.

Is the Jolida the greatest amp in the world? Of course not. Can you do better at the price? Maybe, depending on your tastes. But I do think it's an enormous value--I presently have a JD1501RC on order, to replace the NAD that replaced my 1501A. I'm getting new speakers that need more current, and I missed the Jolida besides. For the money, it does an awful lot right.

If you do buy some tubes to roll, at worst they'll help the Joldia's resale value.