Specification Brand : YTMJPQQJI BulletPoint : Preamps BulletPoint1 : WIDE COMPATIBILITY: Piezo pickup preamplifier is applicable for Guitar, Cello violin, Ukulele, Mandolin and other stringed instruments, Suitable for surface mounted piezo pickups. With 6.35mm sound cable. BulletPoint2 : HIGH IMPEDANCE CIRCUIT: Piezo pickup preamp adopts JFET high impedance charge type amplifier circuit, built in piezoelectric ceramic chip, not affected by input cable length, ensuring no friction effect. BulletPoint3 : GAIN FUNCTION: When the capacitance value of the piezo pickup is 10nf, about 20db, the lower frequency limit is 30Hz, the input impedance is more than 10MΩ, the output impedance is 600Ω BulletPoint4 : RECHARGEABLE BATTERY: The piezo pickup preamp features a built in 300mAh rechargeable li ion battery, with Type C charging cable, providing up to 10 hours of continuous use on a single charge. BulletPoint5 : ALUMINUM ALLOY DESIGN: Constructed from premium aluminum alloy, our piezo pickup amplifier ensures durability and portability. It's robust yet compact, making it the nice companion for musicians on the go. Color : One Color ExternallyAssignedProductIdentifier : 6190080897592 IncludedComponents : No ItemName : WE275 vacuum tube precision matching amplifier(2 pcs) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electric-guitar-amplifier-preamps Language : english Manufacturer : YTMJPQQJI ModelName : Zopscgz4g0wakn5 ModelNumber : YTMJPQQJI NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : YTMJPQQJI ProductDescription : Preamps WE275 vacuum tube precision matching amplifier ProductSiteLaunchDate : 2025-03-28T09:30:27.632Z Size : 2 pcs SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 52161547 WarrantyDescription : Manufacturer warranty for 90 day.