Specification AmplifierType : Tube BatteriesIncluded : 1 BatteriesRequired : 1 Brand : FROMEL ELECTRONICS BulletPoint : Blues Jr Tube Board BulletPoint1 : INCLUDES: Radial Engineering Twin City Active ABY Amp Switcher, a Pig Hog PCH10BK "Black Woven" Instrument Cable and a Liquid Audio Polishing Cloth. BulletPoint10 : Attenuator switch for 20 watts, 5 watts or 1 watt output power BulletPoint2 : ACTIVE ABY AMP SWITCHER: Connect and switch between two guitar amps simultaneously or use them at the same time without noise, gain loss, or tone degradation. BulletPoint3 : CLASS-A INPUT BUFFER: The Radial Twin-City utilizes a high-quality class-A input buffer to enhance signal strength and reduce susceptibility to noise, ensuring crystal-clear audio output. BulletPoint4 : SILENT SWITCHING TECHNOLOGY: Experience completely silent stage switching thanks to advanced circuitry, making it perfect for live performances and studio sessions. BulletPoint5 : BUILT-IN ISOLATION TRANSFORMER: Equipped with an isolation transformer on output-B to eliminate hum and buzz from ground loops, complete with a ground lift and 180⁰ polarity reverse switch to keep both amps in phase. BulletPoint6 : DRAG CONTROL LOAD CORRECTION: Features Drag Control load correction that replicates the natural load on guitar pickups when connected to a tube amp, preserving the authentic tone of your instrument. BulletPoint7 : PIG HOG PCH10BK: Pig Hog "Black Woven" Instrument Cable. Cables are designed to provide the highest quality performance with outstanding value. BulletPoint8 : LIQUID AUDIO POLISHING CLOTH: Keep your guitar looking its best with the Liquid Audio polishing cloth included in the bundle. Maintain a clean and polished appearance while preserving the optimal performance of your instrument. BulletPoint9 : USB Output Color : Black CompatibleDevices : Guitar CompatiblePhoneModels : No Warning Applicable ConnectivityTechnology : Powerline ConnectorGender : Male-to-Female ConnectorType : RCA ConnectorType1 : ¼’ Jack ConnectorType2 : XLR ConnectorType3 : USB ExternallyAssignedProductIdentifier : 4959112248922 ExternallyAssignedProductIdentifier1 : 0634855931112 ExternallyAssignedProductIdentifier2 : 634855931112 Hazmat1 : MAGNETIZED MATERIAL Hazmat10 : DE_NoAir Hazmat11 : EG_NoAir Hazmat12 : ES_NoAir Hazmat13 : FR_NoAir Hazmat14 : GB_NoAir Hazmat15 : IN_MagnetizedMaterial Hazmat16 : IT_NoAir Hazmat17 : JP_NoAir Hazmat18 : MX_MagnetizedMaterial Hazmat19 : NL_NoAir Hazmat2 : UN2807 Hazmat20 : PL_NoAir Hazmat21 : SA_NoAir Hazmat22 : SE_NoAir Hazmat23 : SG_NoAir Hazmat24 : TR_NoAir Hazmat25 : US_MagnetizedMaterial Hazmat26 : ZA_NoAir Hazmat27 : ZA_NoAir Hazmat28 : 9 Hazmat3 : 9 Hazmat4 : AE_NoAir Hazmat5 : AU_NoAir Hazmat6 : BE_NoAir Hazmat7 : BR_MagnetizedMaterial Hazmat8 : CA_MagnetizedMaterial Hazmat9 : CN_MagnetizedMaterial IncludedComponents : Instruction Manual IncludedComponents1 : PCB IncludedComponents2 : SOCKETS IncludedComponents3 : WIRE IncludesRechargableBattery : 1 InputVoltage : 240 volts ItemLength : 60 inches ItemName : Fromel Supreme Tube Board for Fender Blues Jr ItemPackageDimensions_Height : 69 centimeters ItemPackageDimensions_Length : 70 centimeters ItemPackageDimensions_Width : 56 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electric-guitar-amplifier-combos Manufacturer : FROMEL ELECTRONICS Material : Textile ModelName : BJTUBE ModelNumber : 00573242 NumberOfBands : 3 NumberOfLithiumIonCells : 1 OutputChannelQuantity : 1 OutputWattage : 75 watts PartNumber : BJTUBE PowerSourceType : DC power supply ProductDescription : You cherish your Blues Jr, and now it's time to take it to new heights. The Fromel Tube PCB is the solution to maximize your amp's performance, regardless of its version, from Made in USA to the cathode biased IV. Experience a profound improvement in tone, feel, and noise reduction with the new Tube PCB Mod. We've fine-tuned every detail to deliver excellent performance. Mods from Stock: A cathode follower driven tone stack creates a smooth, compressive vintage feel. The stock Blues Jr leaves one of the gain stages in V2 unused, we use this for the cathode follower. The tone stack loads the signal down a lot, the cathode follower helps recover that signal while adding some musical compression. Cathode biased for a touch responsive playing experience. Prior to the current version of the IV all Blues Jr’s were fixed bias and run hot if not modified. Changing from fixed to cathode bias solves all the bias issues for the amp and it sounds fantastic. DC elevated heaters virtually eliminates heater hum, pushing the boundaries of silence. When we installed the first prototype, we were astonished by how quiet the amp was; I honestly don’t know why every amp maker does not do this to the heaters, it’s very simple and works incredibly well. We've included a special mod to tame reverb noise because the amp was so quiet after the mods the reverb was irritatingly noisy even at 3, it’s a real easy mod, just clip one cap and we added it to the newest version of out our Supreme mod instructions and recommend it for all Blues Jr’s modded or not. High-quality double-sided through-plated board sets for durability. The stock board is single sided and the PCB mounted plastic tube sockets are only secured by one pad and a bit brittle lead free solder. After a couple of tube changes the stress can crack these joints and this is one of the well known failure points on these amps. These boards are double sided and plated through so the solder joint is very secure. All the traces on the PCB are the equivalent of 16 gauge wire. There is a ground plane to further reduce noise. Pre-soldered resistors, capacitors, and diodes make installation a bit quicker. I put all the instructions right on the PCB and there are detailed instructions with photos online. The ribbon cables are replaced with individual pre-stripped leads. The kit also includes high quality ceramic sockets. Changes: - All board mounted components are SMD. Why? I can get a much higher rated component for the same cost as through hole for the same cost, resulting in a higher quality product without raising the price. - Added in rush protection for the cathode follower so any 12A*7 or similar pinout will not get hurt. - Modified the hole sizes on the PCB for easier install of the leads. Our recommended tube set for this board is 12AX7, for V1, 12DW7 for V2, and 12AT7 for V3. 12AX7's in all three spots works fine as well. The tube board is a great improvement to any model Blues Jr with or without the Supreme mods for the main board. ProductSiteLaunchDate : 2024-10-14T17:21:13.980Z SpeakerSize : 12 inches SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 52161500 Voltage : 12 volts WarrantyDescription : 1YR on components