Jolida Fusion Modified preamps are exceptional
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Condition | NEW |
Payment methods | |
Contact seller after sale to pay viaCertified check, VISA/Mastercard or Discover | |
Ships from | Broomfield, CO, 80020 |
Ships to | United States |
Package dimensions | ?" × ?" × ?" (32.0 lbs.) |
Shipping carrier | unspecified |
Shipping cost | Specified after purchase |
Original accessories | Remote Control, Box, Manual |
Average | Research Pricing |
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We have now finished our mods for the Jolida Fusion preamplifier. We love the Fusion and it is our favorite tube preamp at anywhere near its $1300.00 price. Our mod is a big upgrade and the modified preamps now compete with preamps in the $3,000-$5,000.00 range.
The basic Fusion preamp is a remote controlled 4 tube preamp (2 12AX7 & 2 12AT7) with home theater bypass. It has 2 sets of RCA outs and one set of XLR outputs as well as a set of fixed RCA outputs. It has 3 sets of RCA inputs on the rear and one set of XLR inputs. There is also a mini plug front panel input for iPod type device.
The Fusion uses Custom Wound Audio Transformers with a core of German grain oriented silicon steel. This is a 15th generation proprietary design. There is even an ALPS audio potentiometer. The stock unit is a great value while our modified preamps are just great. They come with a full metal remote control. They are available in black or silver.
We have these also in 220/240v for International orders.
The mods were designed by Chris Johnson, the founder and former president of Sonic Frontiers.
The following details the Level-1 mod:
a) 2 NATIONAL Semiconductor Overture-E Series LME49710MA “Single” op amps replace the inexpensive opamp in the stock unit.
b) 8 TKD 2-watt 1& metal film signal path resistors replace the stock factory resistors
c) 2 JJ Electronic Main B+ Power Supply Caps are added.
d) 2 JENSEN Aluminum Foil & Paper-in-Oil Input Coupling Caps with pure silver leads non-inductive metalized tin foil & polypropylene capacitors are added in the input coupling cap positions.
e) 2 MUNDORF ZN non-inductive metalized tin foil & polypropylene capacitors are used in the inter-stage coupling cap position.
f) 2 CLARITY ESA series metalized polypropylene output signal coupling capacitors are added.
g) 1 piece of SOUNDCOAT chassis dampening material is applied to reduce resonances
h) 4 EAR compliant Sorbothane isolation feet replace the stock feet to lower external vibration.
e) 10 feet of WBT Solder is used in the mod.
f) 4 hours labor
The modified preamp is more dynamic, faster, more transparent and has greater bass weight than the stock preamp. Imaging and 3 dimensionality are also improved.
Prices
The Level-1 mod is $850.00 to your preamp
New modified Level 1 preamps are $1,750.00
The modified preamps are covered by the 2 year Jolida factory warranty
The Level-2 mod adds to the Level-1 the following:
a) 2 DEXA Technologies “Single” DISCRETE op amp Modules replace the monolithic opamps. These have 84 discrete parts and are a major upgrade from the opamps in the level-1 mod.
b) 2 V-CAP OIMP Series output signal coupling capacitors are used in place of the Clarity caps in the L-1.
The Level-2 is smoother with a more liquid midrange and more detailed extended silky highs as compared to the Level-1. The Level-2 preamp is superb and quite comparable to any $5,000 preamps we have heard.
Prices
The Level-2 mod is $1250.00 to your preamp
New modified Level 2 preamps are $2,190.00
The modified preamps are covered by the 2 year Jolida factory warranty
Optional tube upgrades:
We recommend a pair of Tung-Sol ECC803S gold pins for 12AX7's and one matched pair of Tungsram ECC81's (These are 1970's NOS Hungarian tubes that were made using the old Telefunken machinery) for the 12AT7's Cost $120.00 for the 2 sets
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GA & HI residents add sales tax.
International sales are paid by bank funds wire transfer
Technical Specifications:
Max Output voltage: 20 dB
Voltage Gain: 30 V
Frequency Response: 5Hz to 110KHz, 10 V
Distortion THD: Less than .02%; 1 KHz, 10 V
Signal to
Noise: Less than 100 dB
Input Impedance: 100Kohms
Output Impedance: 600 ohms
Weight: 28 pounds
Size: 17"W X 13"D X 4.5"H
Tube Complement: 2 x 12AX7; 2 x 12AT7 Premium Tungsol Tubes
Brands carried:
Acoustic Zen, Audio Space Tube electronics, Audeze headphones, Bob Carver tube amps and speakers, Burson Audio, Cambridge Audio, Creek, Denon, DSPeaker, Emerald Physics speakers, amplifiers & DAC's, Epos, Essence electrostatic speakers, Furutech ADL, Gallo speakers, Graham Slee, HifiMan headphones, Jolida, LSA amps and speakers, Marantz Reference, Music Hall, Peachtree Audio, Project turntables, PS Audio, Quad, REL subwoofers, Rolls Bellari, Pathos, Quad, Silverline Audio speakers, SONOS, Spread Spectrum Technologies Ampzilla, WADIA, Wireworld, Wyred 4 Sound, Wywires
Sales policies on the Underwood Hifi Inc. website at www.underwoodhifi.com
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