1. All new damper sockets in signal path Allnic’s employed 9pin MT damper socket for decades, but in consideration of importance of microphonic noise- free for headphone amplifier, newly developed 300B US 4 pin damper socket. Now all tubes in signal path operate floated on liquid rubber free from microphonic noise. 2. For powerful drive attack to 300B, Allnic uses choke transformer drive method which shows both good points between CR and interstage transformer coupling one, so HPA-300B has very beautiful 10KHz square wave reproduction capability. 3. For more quicker response of headphones, Allnic developed a smaller output transformer than normal integrated amplifiers. It shows quick response, wider range frequency and beautiful 10KHz square wave. 4. Tube lovers prefer tube rectifying to solid state one, in HPA-300B Allnic puts NOS 5U4G tube which contributes a lot for musical reproduction. 5. Allnic installed 61steps Constant Impedance Bridged “T” type Attenuator. With normal potentio meter type volume, when we listen music at low level, it sounds like a radio. But with C.I.A, you can gear full scale at low level. It makes big difference. 6. Allnic include normal speaker outputs, this is a good high speed 300B integrated amplifier. Allnicrecommend you very good highefficient loudspeakers. SPECIFICATIONS FOR: THEALLNICAUDIOHPA-300B STEREOHEADPHONEAMPLIFIER Inputs Three (3)pairsUnbalanced (RCA). Two (2) pairs Balanced (XLR) HeadphoneOutput Two (2) one-quarterinch (1/4”). Two (2) four-pin Balanced (XLR) Speaker Output: 4ohm / 8ohm FrequencyResponse 20Hz ~ 20KHz (±0.5dB) VoltageGain +28dB Optimum Headphone Impedance: Ten (10) to six hundred (600) ohms OutputWattage Eight (8) watts Maximum Input Voltage: Three (3) volts RMS THD (Total Harmonic Distortion): Less than 0.1% (1KHz, Output 1W) S/ N Ratio: -90db (CCIR, 1KHz) PowerConsumption: 168 Watts Tubes • 5U4GB – Rectifier • 6DR7(or 13DR7)- First gain stage& Drive • 300BX 2 Fuse AC 3A, 250V Dimensions 430mm (~17 inches) x 420mm (~16.5inches) x 240mm (~9.4 inches) (W x D x H) Weight Unpacked: Packaged: 23.64 Kg (~52.1lbs) 29 Kg (~64lbs)
