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Review of the Little-Dot MKII Tube Headphone Amp/Pre-Amp - Page 17

post #241 of 452
my amp finally arrived today, and straight from the box im impressed.
now for a few hours burn in then put my mullard cv4015's in

my first problem.. cant find the jumpers,would they be inside the amp?
post #242 of 452
Quote:
Originally Posted by alan_g View Post
my amp finally arrived today, and straight from the box im impressed.
now for a few hours burn in then put my mullard cv4015's in

my first problem.. cant find the jumpers,would they be inside the amp?
They should be inside the small plastic envelope also in the box.
post #243 of 452
no, definitely none there
post #244 of 452
Quote:
Originally Posted by alan_g View Post
no, definitely none there
Hmm. I would then open the bottom and see if they're already installed. Check the instruction manual as to where to look for them. They're VERY small. If not there, they should be readily available at a nearby electrical or computer source store. but you'll need to know what they look like!
post #245 of 452
the manual is in chinese and there is no diagram from what i can see
post #246 of 452
Quote:
Originally Posted by alan_g View Post
the manual is in chinese and there is no diagram from what i can see
Send me your email address by Private Message and I will email you a copy of the manual in English.
post #247 of 452
Quote:
Originally Posted by alan_g View Post
the manual is in chinese and there is no diagram from what i can see
You can download an English users manual here - Viewing a thread - The Little Dot MK II Headphone Tube Amplifier/Pre-Amp. Look at the bottom of the first post.

Also, email David about the missing jumpers or find a suitable replacement locally.
post #248 of 452
Thread Starter 
Quote:
Originally Posted by alan_g View Post
no, definitely none there
They should be in the plastic bag, the included RCA/mini cable came in.
post #249 of 452
i have checked every part of the box and still cannot find them. I have mailed jasmine_chine whom i purchased the amp from
post #250 of 452
Thread Starter 
Quote:
Originally Posted by alan_g View Post
i have checked every part of the box and still cannot find them. I have mailed jasmine_chine whom i purchased the amp from
Just an FYI, The jumpers are the standard size, so if you have an old computer motherboard or any old computer stuff, the jumpers used there are the same type/size, so you can get a couple that way. Radio Shack sells them as well.
post #251 of 452
thanks david, i think i have an old board somewhere at home. Where do the jumpers actually go? Sorry if im being a bit dense
post #252 of 452
Thread Starter 
Quote:
Originally Posted by alan_g View Post
thanks david, i think i have an old board somewhere at home. Where do the jumpers actually go? Sorry if im being a bit dense
On the MKII, you have to remove a few screws to get to the jumper pins. Notice you have 4 screws on the front, and 4 screws on the back. Remove the bottom two screws on the front, and on the back, and the bottom of the case will come off.

Look at the exposed board. You'll see the jumper pins located more toward the front of the board. Simply install one jumper on each set of pins (one set is Left channel and one set is Right channel) and then put the bottom of the case back on, and screw it back together.

Now you are ready to try the EF92 family of tubes. I think you'll like the EF92 family. They are my favorites.
post #253 of 452
i have 2 mullard cv4015 waiting, are they ef92 family?
post #254 of 452
Thread Starter 
Quote:
Originally Posted by alan_g View Post
i have 2 mullard cv4015 waiting, are they ef92 family?
Yep, and they are good ones too. They'll need 40-45 hours to mature, but you'll notice their nice sound right away.
post #255 of 452
i noticed on the maplin electronics site that they have 2.54mm jumpers(10 for 99pence) would this be what i need?
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