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Specification
AmplifierType : Solid State
BatteriesIncluded : 1
BatteriesRequired : 1
Brand : Jolooyo
BulletPoint1 : The original MJ15024G/MJ15025G and MJE15034/MJE15035 are used.
BulletPoint2 : Power parameters: DC+-55V (AC: transformer 400W dual 40V, need to add rectifier board).
BulletPoint3 : Power: class An and B 350W (total harmonic distortion THD+N < 0.1%), DC+-55V 4 ohms, Class A 90W+90W 8 ohms.
BulletPoint4 : The interstage coupling capacitor adopts two 47UF capacitors in series, so the sound is natural and the sound field is wide.
BulletPoint5 : PCB size: 130 (including angular aluminum) * 270MM.
Color : Black
CompatibleDevices : Guitar
CompatibleDevices1 : Drum
CompatibleDevices2 : Guitar
ConnectorType : 6.35mm Jack
CustomerPackageType : Standard Packaging
ExternallyAssignedProductIdentifier1 : 0728619635993
ExternallyAssignedProductIdentifier2 : 728619635993
ExternallyAssignedProductIdentifier3 : 4957054507701
ExternallyAssignedProductIdentifier4 : 00761294507704
ExternallyAssignedProductIdentifier5 : 04957054507701
Hazmat1 : LITHIUM ION BATTERIES PACKED WITH EQUIPMENT
Hazmat10 : CN_SmallLithiumIonBatteryWithEquipment
Hazmat11 : DE_SmallLithiumIonBatteryWithEquipment
Hazmat12 : EG_SmallLithiumIonBatteryWithEquipment
Hazmat13 : ES_SmallLithiumIonBatteryWithEquipment
Hazmat14 : FR_SmallLithiumIonBatteryWithEquipment
Hazmat15 : GB_SmallLithiumIonBatteryWithEquipment
Hazmat16 : IN_SmallLithiumIonBatteryWithEquipment
Hazmat17 : IT_SmallLithiumIonBatteryWithEquipment
Hazmat18 : JP_SmallLithiumIonBatteryWithEquipment
Hazmat19 : MX_SmallLithiumIonBatteryWithEquipment
Hazmat2 : UN3481
Hazmat20 : NL_SmallLithiumIonBatteryWithEquipment
Hazmat21 : PL_SmallLithiumIonBatteryWithEquipment
Hazmat22 : SA_SmallLithiumIonBatteryWithEquipment
Hazmat23 : SE_SmallLithiumIonBatteryWithEquipment
Hazmat24 : SG_SmallLithiumIonBatteryWithEquipment
Hazmat25 : TR_SmallLithiumIonBatteryWithEquipment
Hazmat26 : US_SmallLithiumIonBatteryWithEquipment
Hazmat27 : ZA_SmallLithiumIonBatteryWithEquipment
Hazmat28 : 9
Hazmat3 : II
Hazmat4 : 9
Hazmat5 : AE_SmallLithiumIonBatteryWithEquipment
Hazmat6 : AU_SmallLithiumIonBatteryWithEquipment
Hazmat7 : BE_SmallLithiumIonBatteryWithEquipment
Hazmat8 : BR_SmallLithiumIonBatteryWithEquipment
Hazmat9 : CA_SmallLithiumIonBatteryWithEquipment
IncludedComponents : 1 Amplifier
IncludesRechargableBattery : 1
ItemName : YJ 4B Gold Sealed Tube Pure Post-grade MJ15024G / MJ15025G & MJE15034 / MJE15035 Class A Power Amplifier Board (90W+90W)
ItemPackageDimensions_Height : 66.548 centimeters
ItemPackageDimensions_Length : 32.512 centimeters
ItemPackageDimensions_Width : 50.292 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : acoustic-guitar-amplifier-preamps
Manufacturer : Jolooyo
Material : Nylon,Brass
ModelName : JC-40
ModelNumber : YJ 4B
MountingType : Surface Mount
NumberOfBands : 3
NumberOfBoxes : 1
NumberOfItems : 1
NumberOfLithiumIonCells : 1
NumberOfLithiumMetalCells : 1
OutputChannelQuantity : 1
OutputWattage : 40 watts
PackageLevel : unit
PartNumber : YJ 4B
PowerSourceType : Corded Electric
ProductDescription :

Specifications:
The original MJ15024G/MJ15025G and MJE15034/MJE15035 are used.
The interstage coupling capacitor adopts two 47UF capacitors in series, so the sound is natural and the sound field is wide.
The five-ring metal resistor is selected as the resistance, and the five-ring metal film resistance with an accuracy of ±1% is used in the main circuit to ensure a good signal-to-noise ratio of the whole machine.
PCB adopts 1.6mm thick double-sided plate, 2.0oz copper thickness, full plate gold plating process to ensure good passing performance of large and small current.
The wiring layout of the whole circuit board is quite rigorous and reasonable, and the overall PCB wiring adopts one-point grounding mode. This power release board works stably.
Reliable, high output power, beautiful and round sound, open sound field. Strong three-dimensional sense, steady and powerful low frequency, excellent signal-to-noise ratio, wide dynamic range; clear details, excellent transient response, can play all kinds of music well, and has a good performance in the family playback environment.

Basic parameters:
1. Power parameters: DC+-55V (AC: transformer 400W dual 40V, need to add rectifier board).
2. Power: class An and B 350W (total harmonic distortion THD+N < 0.1%), DC+-55V 4 ohms, Class A 90W+90W 8 ohms.
3. Class A 90W under 8ohms load.
4. Horn impedance: 4-8 ohms.
5. PCB size: 130 (including angular aluminum) * 270MM.
6. The static current of the tube is 100MA: adjust the adjustable resistor VR2 (1K) so that the voltage of An and B points is 22MV, then the static current I=22MV/0.22R resistance is 100MA; if the customer heatsink is large enough, it can increase the static current, general 100MA-300MA sound effect.
7. Weight: 0.6KG+0.6KG.

Packaging: a pair of 4B gold sealed tube pure post-class A power amplifier board (90W+90W)

ProductSiteLaunchDate : 2023-12-13T08:00:00.000Z
Size : 40 Watt
SpeakerSize : 10 inches
StreetDate : 2019-12-01T00:00:01Z
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredDgHzRegulation1 : not_applicable
SupplierDeclaredDgHzRegulation2 : not_applicable
SupplierDeclaredDgHzRegulation3 : not_applicable
SupplierDeclaredDgHzRegulation4 : not_applicable
SupplierDeclaredDgHzRegulation5 : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
WarrantyDescription : see manufacturer's website for details