Specification AgeRangeDescription : Adult AmplifierType : Class A Brand : FLYINSKY BulletPoint : Portable Headphone Board Kit AMP Module Kit For Classic 47 +case BulletPoint1 : ①[Headphone Amplifier + Tube Amplifier] This 6n2 + fu19 parallel class A vacuum tube amplifier can be either used as an earphone amplifier or a passive speaker amplifier. Compatible with Sennheiser HD600 HD650 HD700 HD800 headphones, showing amazing performance and harmony. Featuring lowest noise, distortion, clipping, very quiet, runs extremely cool, easy to operate, achieving excellent sound quality. BulletPoint2 : ②[Audio Input Ways] A RCA input port. The signal source can be a CD player or a computer audio source (with line out port on the computer sound card). Output 6.35mm headphone output port and speaker output port ( two interfaces the impedance are 4 ohms, 8 ohms; power: 4w + 4w), only compatible with speakers (①impedance (4-8) ohms,②The two speakers, ③90db sensitivity and above ④6.5 inches Above), compatible with headphones in 19-600 ohms (About 1W). BulletPoint3 : ③ [With Protection] Using the Output Transformer, well protect your high-grade headphones from damage. One line audio protection, perfect headphone protection circuit, output transformer no-load protection. Adopting high quality volume potentiometer to ensure clear positioning and left-right balance. Adopt metal film resistors and imported electrolytic capacitors with a precision of up to 1%. Using a unique design and layout, large space, large dynamic range. BulletPoint4 : ④ 【Super Quiet】Using AC filament voltage, with 102DB headphones listening, can not hear a little AC sound noise. It feels the same as not turning it on, very quiet. Frequency response: 26-38KHz ± 2db; Output signal-to-noise: >118dB "A" - wtd; Output THD: <0.008% 10Hz to 20kHz; Amplifier output peak: About 1W (corresponding to the power of the corresponding headphone impedance calculation). BulletPoint5 : ⑤ [High Performance] Use the high-quality Class A headphones/speakers tube amplifier, you’ll enjoy an excellent and distinctive sound quality. The sound has strong tube flavor. All the low, medium and high frequency is well-balanced. You can enjoy a strength low-frequency, a warm & mellow mid-frequency, and a very special, layered, tightly knit, stretching and bright high-frequency sound. There is also no split at all the very high frequency sound. All the details of the sound is well controlled! Color : Sliver CompatibleDevices : Earphone ConnectivityTechnology : Wireless ConnectorType1 : 6.35mm Jack ConnectorType2 : RCA ExternallyAssignedProductIdentifier : 4861016845032 HeadphonesFormFactor : On Ear IncludedComponents : Heaphone Amplifier/Speakers × 1 IndoorOutdoorUsage1 : outdoor IndoorOutdoorUsage2 : indoor ItemName : HiFi Class A 4W*2 Vacuum Tube Amplifier for 6.3mm Headphone/Speaker, Compatible with Sennheiser HD600 HD650 HD700 HD800 Headphone Amplifier Vacuum Tube Mini Speaker Amplifier (6n2+fu19 Grey) ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 29 centimeters ItemPackageDimensions_Width : 28 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : headphone-amps Manufacturer : FLYINSKY Material : Stainless Steel ModelName : F01 ModelNumber : 6n2+fu19 Grey NumberOfItems : 1 OutputChannelQuantity : 2 OutputWattage : 4 watts PartNumber : F01 F02 PowerSourceType : Corded Electric ProductDescription : 6n2 + fu19 amplifier + earphone dual-purpose vacuum tube amplifier features: The 4 ohm port is stable, while the 8 ohm output can be switched to the headphone’s interface. product weight: 6kg or with packaging size 40 * 35 * 25cm Product size: size 32*18*16cm with tube height - Input: one way RCA input - Output: rear amplifier interface output has impedance 4 ohms/ 8 ohms two interfaces 4w + 4w Front 6.35mm standard headphone output, 19-600 ohms - Frequency Response:26-38KHz ±2db Output Signal-to-Noise:>118dB "A"- wtd Output Total Harmonic Distortion:<0.008% 10Hz to 20kHz - Peak output of earphone amplifier: (about 1w) (please calculate the corresponding power according to the impedance of headphone) ProductSiteLaunchDate : 2024-04-15T11:26:20.159Z Size : Large Style : Classic SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 52161547 WarrantyDescription : 1 Year WirelessCommunicationTechnology1 : Headphone Amplifier WirelessCommunicationTechnology2 : FM