Mono Price blue tooth tube amp $50

Nicholas_23

https://www.monoprice.com/product?c_id=109&cp_id=10919&cs_id=1091903&p_id=16152&AID=11051853&PID=552179&ref=cj&utm_source=cj&utm_medium=11051853&utm_term=dealnews.com-551655

ani_101

So who's getting one?

PWRRYD

I might buy one just to mess with.  Heck, the case alone with power, rca, and speaker jacks is worth 50 bones.

PWRRYD

Ok I just ordered one.  Will probably use it for my garage system.

ani_101

Great, would like your comments on it.... I might get one too... provided it is not total crap. These are not power tubes, do they still get pretty hot?

PWRRYD

Yes, even small signal tubes get hot.  Not as hot as big power tubes, but certainly too hot to touch without leaving a blister.  The small driver tube in my KT88 SET amp probably runs at about 160-180 F.  Just a guess as I have never actually measured it.

PWRRYD

If you don't mind waiting I will bring this little amp to SD in two weeks so you can hear it.  I know the sale price is only good through Monday though.

Nicholas_23

Mine came in today, haven't hooked it up yet but there's some weight to it. Looks to use Chinese 6N2-J tubes. I believe the J suffix is classified as military spec , I may be wrong. Might be on the search for some Russian tubes in the near future. 

ani_101

I got mine too today, was supposed to be delivered tomorrow.... BTW, the sale price is still valid.... Craig did you get yours and how does it sound to you? We are all tube noobs...

PWRRYD

I just got home and mine arrived today too.  I won't be able to play with mine till Saturday.  It looks really nice.

Nicholas_23

Plugged mine in to warm up the tubes. Not sure if it's the tube or the channel but left side is burning hotter

Nicholas_23

Wonder if it's worth biasing the tubes . I'll know more when I hook it up and listen

PWRRYD

Just got home and hooked mine up.  Only one channel works  

Looking through the bottom plate vent slits the solder joints on the pcb look pretty F'n crappy.  I hope it's just a bad connection.  Doubt I would send this thing back.  Just repurpose the nice looking enclosure and connectors for my own tube preamp design and a TDA7492 amp board.

Nicholas_23

Good to know , I'll take the bottom off and take a look at mine. From what I've heard ,not bad. I have them running off of a pair of JR's two way speakers
 

Nicholas_23

Have you investigated anymore craig

Nicholas_23

Ani , have you had a chance to mess with yours?

ani_101

no, not yet.... but i am going to try tomorrow.... but i don't have any small efficient speakers on hand, all are power hogs.... but i'll dig something out to try.

How are you measuring the temperature of the tubes?

Nicholas_23

Just visual when powered up , I can tell one burns hotter. Probably just the tube. 

ani_101

Sounding good, but the the left tube seems to be glowing brighter than the right tube.... guess that's what you meant by the tubes being at a different temperatures....

Nicholas_23

Inspected some solder joints , this one seems to be solid.

PWRRYD

I fiddled with mine again tonight.  Now no sound from either channel.  I will somehow make something out of this thing....

Nicholas_23

Hope you figure something out with your amp craig. If anything have mono refund or pay for return shipping 

kennyk

I ordered one. A little anemic on power and not bad sounding, but only auditioned it for about 15-20 minutes​ before leaving for work. Will give it a workout later.

ani_101

Do you also have one brighter and one lighter tube?

PWRRYD

Yes.

kennyk

My thumb glows hotter. 

Turn2

I caved for this unit as well. Awaiting delivery.

Nicholas_23

The Mrs placed an order for a pair of these. I will post when they arrive . http://m.ebay.com/itm/2x-6N2P-EV-ECC83-12AX7-Tubes-1970x-NIB-FREESHIPPING-/322493539493?hash=item4b161ce4a5:g:U-oAAOSwBLlVEBYL&_trkparms=pageci%3A378d805a-530d-11e7-a5ad-74dbd180d7af%7Cparentrq%3Ab4197f9115c0abc2cc9211f7fffe4401%7Ciid%3A18

kennyk

Nicholas_23 said:

The Mrs placed an order for a pair of these. I will post when they arrive . http://m.ebay.com/itm/2x-6N2P-EV-ECC83-12AX7-Tubes-1970x-NIB-FREESHIPPING-/322493539493?hash=item4b161ce4a5:g:U-oAAOSwBLlVEBYL&_trkparms=pageci%3A378d805a-530d-11e7-a5ad-74dbd180d7af%7Cparentrq%3Ab4197f9115c0abc2cc9211f7fffe4401%7Ciid%3A18

Keep us updated.

Nicholas_23

Most definitely

kennyk

My son hijacked mine and a pair of speakers........damn kids.