MARK IV KIT (120 VAC)
Use our Order Form (PDF) and just email it back to us at:
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The high demand for our amplifier kits has created an unexpected backlog of orders. Unlike other vendors, we do not accept deposits or advance payments. We can however reserve a slot in our production schedule if you send us your amplifier kit order details.
We would require your full contact information plus any options that you wish to include with your kit order. If you prefer, you can simply use our Order Form which you can complete and return to us via email.
Following our receipt of your order details we will confirm pricing, payment options, and estimated delivery. Please do not send credit card (payment) information with your order details. Reserving your order is considered a non-binding agreement.
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Our online shopping cart is for USA orders Only. Click here for other ordering optionsDescription
Full kit package less tubes and top vented cover. Kit requires user assembly of PC board. Choose either type: (A) original 7199 tube design or (B) our new 6GH8A tube design.
Note: The 7199 tube has become increasingly scarce. Unless you have an ample supply of this tube type then we strongly suggest you consider our Version (B) Kit.
Both MK IV kits include our new brown Polyimide circuit board!
Review by Don of Santa Fe, New Mexico 2018 (Updated 09-2019)
I now have 1630 operating hours on the MK-IV’s (with JJ-KT77’s) and just wanted to tell you that they sound wonderful! They operate @ 0.93 amps (each) between 123 & 125.4 vac. (both amplifiers included CL-90 Thermistors to address this elevated line voltage) I am starting to believe they sound better than my Quicksilver Mid-Mono amps (EL34’s) and my PAS Labs XA-30.8 solid state Class-A amp !!!
In short, these kits have been the best audio investment I have ever made. Thank you again for all your help, guidance and ideas.
Best regards….Don
| CIRCUIT TYPE: | PUSH-PULL DESIGN (MONO AMP) |
| POWER OUTPUT: | 40 WATTS PER CHANNEL |
| TUBE TYPES: | (2) EL34 (6CA7) OUTPUT TUBES “MATCHED PAIR” (1) 7199 or 6GH8A PENTODE TUBE (1) GZ34/5AR4 RECTIFIER TUBE |
| INPUT SENSITIVITY: | 1.3V FOR 40 WATTS OUTPUT |
| INPUT IMPEDANCE: | 470K OHMS |
| OUTPUT IMPEDANCES: | 4, 8 & 16 OHMS |
| NOISE & HUM: | MORE THAN 90 DB BELOW RATED POWER |
| THD: | LESS THAN 1% AT FULL POWER |
| FREQ. RESPONSE: | 20 HZ TO 20K HZ AT FULL POWER + / – 1 DB |
| SIZE: | 6 ½” H X 14″ W X 5″ D |
| WEIGHT: | 21 Lbs. |