Harman Kardon - HK 505 固态集成放大器

Harman Kardon HK 505
Technically functional sound on both channels. -> 技术上两声道声音功能完好。
Tested on all inputs. -> 已在所有输入端测试。
Switches and buttons are all functional. -> 开关和按键全部正常。
In original condition. -> 维持原状。
There are optically visible traces of use and some scratches on the front panel. -> 前面板有肉眼可见的使用痕迹和一些划痕。
The rotary potentiometer for selecting the input has signs of use, see pictures. -> 选择输入的旋转电位器有使用痕迹，见图片。
Considering its age, it is still in correct technical and optical condition. -> 就其年龄而言，仍然在技术和外观上保持良好。

The Harman Kardon HK 505 is a highly regarded, vintage 60-watt per channel integrated amplifier introduced in 1978, widely celebrated by audiophiles as a hidden gem for its pristine clarity, exceptional bass response, and massive power headroom. -> 哈曼卡顿 HK 505 是一款广受好评的老式60瓦特/声道的集成放大器，1978年问世，音响爱好者普遍称赞为隐藏瑰宝，其清晰度极高、低音响应出色、功率裕度巨大。
Released as the top-of-the-line integrated unit of its series, it famously incorporates the ultra-wideband, low-feedback design philosophies of legendary audio engineer Dr. Matti Otala. -> 作为该系列的旗舰集成单元推出，众所周知地采用了传奇音频工程师 Matti Otala 博士的超宽带、低反馈设计理念。
Technical Specifications Overview
ParameterSpecification
Power Output60 Watts per channel RMS into 8 ohms (90 Watts into 4 ohms) -> 功率输出：每声道60瓦（8欧姆时的有效值；4欧姆时为90瓦）
Design TypeDC-coupled, open loop, low negative feedback -> 设计类型：直流耦合、开环、低负反馈
Weight12 kg (approx. 26.5 lbs) -> 重量：12 千克（约26.5磅）
Production Years1978 – 1980 -> 生产年份：1978–1980

Key Connections
Pre-out / Power-amp-in jacks, selectable input phono capacitance -> 预输出/功放输入端插口，输入音容电容量可选
Key Review & Performance Highlights
Exceptional Sound Signature:Delivers a highly transparent, articulate, and crisp sound. -> 出色的声音特征：提供极其透明、清晰锐利的声音。
Offers an incredibly powerful, punchy low-end response. -> 低频极具力量感、干净有冲击力。
Tends to sound much larger than its 60W rating. -> 听感往往超过其60W额定功率的字号。
May feel slightly colder or more clinical compared to older, warmer HK models. -> 相较于较老、偏暖的 HK 型号，可能感觉稍冷或更临床。
Advanced Engineering & Features:
Designed with the fingerprints of Dr. Matti Otala to minimize transient intermodulation distortion. -> 以 Matti Otala 博士的设计思想为基础，旨在降低瞬态互调失真。
Features a customizable phono section with selectable input capacitance for fine-tuning cartridges. -> 设有可自定义的唱机输入段，输入电容可选，用以微调唱头。
Built with pre-out and main-in loops for seamless use as a standalone pre-amplifier or power amp. -> 配有前输出和主输入回路，便于作为独立前置放大器或功放无缝使用。
Build Quality Nuances:
Utilizes massive, solid 9mm brushed aluminum side profiles to create a striking vintage aesthetic. -> 使用厚重、坚固的9mm拉丝铝质侧边框，营造醒目的复古美感。
Features an underlying plastic front structural plate beneath a thin aluminum faceplate overlay. -> 前面板下方有一块塑料前压结构板，表面覆以薄铝合金面板。
Manufactured by Shin Shirasuna Corporation in Japan with highly accessible internal layouts for modern servicing. -> 由日本志那留三株式会社制造，内部布局便于现代维护。