Little Dot MK IV 4 Headphone Tube Amplifier/Pre-Amp!

Little Dot MK IV Headphone Amplifier / Pre-Amplifier

The Little Dot MK IV is our flagship single-ended headphone amplifier/pre-amplifier in the Little Dot MK-series.  Boasting a SEPP (OTL) in Class-A circuit design filled with high quality components such as an ALPS-27 potentiometer, Nichicon, Rubycon, and German WIMA/ERO capacitors, the Little Dot MK IV is truly our best effort yet.  Regardless of whether your headphones are 32 ohms or 600 ohms, the Little Dot MK IV can drive them easily with effortless dynamics (45Vp-p!) , subterranean bass, cavernous soundstage, and precise 3-D imaging. 

The Little Dot MK IV also adds in user-tweaking options such as two gain switches to delivery maximum compatibility with all your headphones, regardless of impedance or sensitivity.  Also available for the very first time in a Little Dot amplifier, is an internal jumper to allow use with a wider range of driver tube-rolling, including the EF92, CV131,  WE403A/B, GE5654, M8100, CV4010, EF95, 6JI as well as all equivalents, derivatives, and direct replacements to these vacuum tubes!

Upgrade to the Little Dot MKIV SE (Special Edition) for an additional $100:

The Little Dot MK IV SE is a special edition version (limited 500 sets) of the Little Dot MK IV which a Neutrik headphone jack upgrade, as well as American CMC or Van Den Hul RCA jacks.  The SE version also replaces the normal MK IV vacuum tubes with M8100/CV4010 driver tubes and 6H30PI (Gold-Pin) power tubes!  To upgrade to the SE version, use this listing's "Buy it Now" but instead of submitting payment immediately, use the "Request Invoice" link and let me know you want the Special Edition upgrade.  I will then send you a revised invoice for you to submit payment.
Final price for the Little Dot MK IV SE is $399 (instead of $299) plus applicable shipping.

Technical Specifications:

• SEPP (Singled-ended Push Pull) OTL in Class-A
• Frequency response:   10 hz~100 Khz   (-1dB)
• THD+N: 0.1% (100 mW @ 300 ohm)
• Power Output:
• 500 mW @ 300/600 ohm
• 300 mW @ 120 ohm
• 100 mW @ 32 ohm
• Power Consumption: 30W (228V x 0.133A)
• Variable Gain: 3,4,5, or 10x
• Recommended Load Impedance:   32 ohm~600 ohm
• Input Impedance: 50K ohms
  
• Pre-Amplifier Output Impedance: 600 ohms
• Pre-Amplifier Gain: 3-10x (also controlled via gain switches)
• Pre-Amplifier Voltage: 10V RMS
• Pre-Amplification circuit includes both driver and power tubes
• Driver Tubes: 2x JAN 5654 (MK IV) or 2x M8100/CV4010 (MK IV SE)
• Power Tubes: 2x Soviet 6H30EH (MK IV) or 2x 6H30PI Gold-Pin (MK IV SE)
• High quality aluminum chassis
• Neutrik Headphone Jack (SE version only)
• American CMC/Van Den Hul RCA Jacks (SE version only)
• Dimensions (Metric): 320mm deep by 220mm wide by 143mm high
• Dimensions (English): 12.6 inches deep by 8.66 inches wide by 5.62 inches
• Weight: 3.5 Kg or 7.7 lbs
• 1 Year Little Dot Warranty (2 Year Little Dot Warranty for MK IV SE)
  

Power Cord Note: Little Dot amplifiers ships with a standard Type-B power cord (American 3-pin or U-ground) suitable for use in areas such as North America, Japan, Taiwan, etc.  If your country's outlets use other power cord types (ex. Schuko) you will need a power cord of your own plug type.  You likely have several spares around your home, as any standard power cord (like your computer's power cord) will work perfectly fine.  We do apologize for any inconvenience!

Purchasing Instructions:
At the time of purchase, please indicate the following information in your EBAY checkout notes section, PayPal payment notes section, or in a separate email/EBAY message:

• Contact telephone number for shipping purposes
• Your country's voltage specs: 120V (USA, Canada, etc), 220V (Europe, Asia, etc), or 240V (Australia)

Please monitor your PayPal email address for all correspondence, updates, and tracking information regarding your Little Dot order!

International Buyers – Please Note:

• Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility.
• Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying.

•    USA, Canada, Japan, Australia, and most of SE Asia: $45
•     UK, France, Spain, Italy, Germany, Belgium, Norway, Sweden, Denmark, Austria: $51
•     the Netherlands: $66
•     Czech Republic, Poland, most of Eastern Europe, and Russia please inquire to confirm shipping before purchase!
•     Please inquire for other destinations!

EMS shipping charts and prices can be found here.  If you would like to confirm for yourself, visit www.usps.gov (or your country's equivalent) and estimate shipping a package of similar weight from your location to China.  In nearly all cases, the shipping quote will be equal to or even higher than what we require for shipping fees.

Total shipping weight is ~8 lbs via an international express service.  Shipping via EMS Express generally takes 4-10 business days to any location in the world.

Warranty and Support:

Are you intrigued by our Little Dot amplifiers but worry about the process if, Heaven forbid, something were to go wrong?  Rest assured, our Little Dot products are backed by arguably the best, and most customer-friendly warranty policy in the business for your peace of mind!  Please do note however that our warranty and support only applies to Little Dot amplifiers sold through direct sales (i.e. this eBay listing) or our Authorized resellers.  We cannot provide any warranty or support for Little Dots acquired through unauthorized or gray market sellers (i.e. other sellers).

•  If on the chance a functional problem arises within the first 3 months (we've found that if issues occur, the vast majority crop up within the first month or two) of your warranty period and you send it back to us for repair, we will reimburse you the full return shipping amount once we receive it so there is absolutely no out-of-pocket cost to you!

•     From 3 months until the end of your warranty period, if a functional problem arises we will reimburse you for half of the return shipping cost once we receive it.

•     From warranty expiration to as long as you own your Little Dot, repair/labor/parts are always free - the only thing you are responsible for is shipping costs.

•     Vacuum tubes are not covered under warranty as they are a consumable item, however if there are functional issues with a tube, we can provide a free replacement(s) for just the cost of shipping.

As you can see, we stand behind our products and are fully committed to providing the best ownership experience we can provide.  Again, our warranty only applies to Little Dots sold through direct or authorized resellers as otherwise we cannot guarantee the initial quality and A-stock, new status of Little Dots sold through unauthorized or gray market sellers. 

For more information on our products, please visit us on our Little Dot website and forum: 

Little Dot Official Forum

 
Please note that the photos shown are from both the Little Dot MK IV and the Little Dot MK IV SE.  The appearance of both versions is virtually identical with only the following differences:

• SE version has label "Little Dot MK IV SE" instead of "Little Dot MK IV" on the front panel.
• SE version has Neutrik-branded headphone jack
• SE version has American CMC or Van Den Hul branded RCA jacks
• SE version ships with different driver and power vacuum tubes
• SE version uses Solen input capacitors, and precision Vishay-Dale resistors at key points

Note:  Photos are for illustrative purposes only.  Please refer to the product description for the most explicit and up-to-date specifications, components, parts, tubes, accessories, etc.