拓品 A90 Discrete 全平衡耳放

评测依据

• review_count：4200
• rating_avg：4.6
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• merchant_count：0
• price_range：[2000,3999]
• dimension：battery
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 02:07:07","to":"2026-06-26 02:07:07"}
• intros：{"brand_intro":"拓品（Topping）成立于2014年，是中国专业音频测量设备制造商，后进入Hi-Fi消费市场。以\"科学HiFi\"为理念，强调低失真、高指标，产品在ASR（Audio Science Review）等专业评测中屡获高分。其解码器和耳放以极致参数和亲民价格著称，深受参数党发烧友喜爱。","product_intro":"A90 Discrete 是拓品旗舰级全平衡耳放，采用分立式晶体管放大电路，THD+N低至0.00008%。支持XLR平衡和6.35mm单端输出，最大输出功率达6000mW（平衡，16Ω），可驱动从低阻到600Ω高阻抗耳机。具备前级输出功能，可搭配有源音箱使用。","key_specs":["放大类型：分立式晶体管全平衡","THD+N：< 0.00008%（1kHz，A计权）","输出功率：6000mW（平衡，16Ω）/ 1500mW（平衡，300Ω）","信噪比：> 140dB（A计权）","频率响应：20Hz - 40kHz（±0.1dB）","接口：XLR平衡输入/输出、6.35mm单端输出、RCA输入"]}
• alt_products：[{"product_name":"拓品 A90 Discrete 全平衡耳放","brand":"Topping","model":"A90 Discrete","price":3599},{"product_name":"iFi Audio Zen CAN Signature 6XX 耳放","brand":"iFi Audio","model":"Zen CAN Signature 6XX","price":2280}]
• kol_quotes：["\"A90 Discrete的测量数据几乎无可挑剔，是理性发烧的终极选择。\"——ASR评测","\"它的声音像手术刀般精准，适合喜欢监听风格的用户。\"——耳机俱乐部"]
• scoring_breakdown：[{"source":"word_of_mouth","score":85.3,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其极低的失真和透明的声底，驱动力充沛，能清晰揭示录音细节。搭配高阻抗耳机时控制力出色，声音干净利落。部分用户认为其声音偏冷、缺乏\"音乐味\"，且外观设计较为朴素。整体评价正面，是追求指标玩家的首选。","source_count":0}},{"source":"objective","score":92,"weight":0.5,"confidence":0.7,"details":{"dimension":"battery","rating_avg":4.6,"review_count":4200,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":92,"weight":0.15,"confidence":1,"details":{"rating_avg":4.6,"review_count":4200,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["\"A90 Discrete的测量数据几乎无可挑剔，是理性发烧的终极选择。\"——ASR评测","\"它的声音像手术刀般精准，适合喜欢监听风格的用户。\"——耳机俱乐部"]}}]
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