二嫂Esoteric F03A合并式功放

二嫂Esoteric F03A合并式功放,日本Esoteric旗下F-03A综合放大器,它是F系列当中等级最高的,也是唯一的纯A类综合放大器,在8Ω负载条件下,可以提供30W的输出功率,4Ω时可以翻倍至60W,虽然没有超大功率输出,但足以应对大多数家用音箱。

F-03A承袭自家最高阶Grandioso系列的技术精华,内部的全平衡前级架构是来自于Grandioso C1,再搭配纯A类功率放大。全机采用双单声道设计,从前级输入一直到后级功率输出的最后阶段都是如此,左右声道完全独立可以有效降低串音干扰的问题。内部搭载940VA大型EI变压器,每声道具备40000μF(10000μF × 4)的滤波电容。每声道使用3对Sanken的LAPT功率晶体并联推挽输出,同样的晶体也能在旗舰级S1、M1身上看到,可提供17安培的电流供应,最大峰值达34安培。

音量控制部分,F-03A采用独家QVCS(Quad Volume Control System)音量控制系统,同样是来自旗舰C1前级的技术,使用4组电阻数组分别控制左右声道的+、-音乐讯号。输出/入端子方面,F-03A拥有4组RCA输入、2组XLR输入、1组XLR Pre in,还有1组RCA端子支持MM/MC唱头输入。输出端子有XLR、RCA前级输出各1组,另外前面版上有1组6.3mm耳机输出,搭配独立耳机输出线路。

技术参数

Esoteric F-03A

型式:纯A类综合放大器

输出功率:30W(@8Ω)、60W(@4Ω)

总谐波失真:0.006%

频率响应:10Hz~100kHz(1W, +0/-3.0dB)

信噪比:104dB

阻尼因子:370

前级增益:24.5dB(最大音量)

后级增益:29dB

尺寸:445x191x468mm(WxHxD)

重量:32kg二嫂Esoteric F03A合并式功放

二嫂Esoteric F03A合并式功放

Speaker output Rated output 30W + 30W (8Ω)
60W + 60W (4Ω)
Total harmonic distortion
(1kHz, 8Ω)
0.006% (30W)
Frequency response
(+0/-3.0 dB at 1W output)
10Hz - 100kHz
S/N ratio (IHF-A) 104dB
Damping factor 370
Minimum compatible impedance
Speaker output connectors 2 pairs (L/R) (screw type)
Input impedance XLR, RCA 10kΩ
PHONO (MM) 47kΩ
PHONO (MC) 100Ω
EXT. PRE IN 47kΩ
Output impedance XLR, RCA 100Ω
PRE OUT S/N ratio (at 1V output)
XLR, RCA input 110dB
PHONO (MM) input 93dB
PHONO (MC) input 75dB
Gain Preamplifier 24.5dB (when VOLUME at maximum)
Power amplifier 29dB
Tone controls BASS  tone curve ±12dB (63Hz)
MIDDLE  tone curve ±12dB (630Hz)
TREBLE  tone curve ±12dB (14kHz)
General Power supply / Power consumption AC 230V 50Hz / 290W (no signal: 290W)
AC 120V 60Hz / 290W (no signal: 215W)
AC 220V 60Hz
External dimensions
(W x H x D)
445 x 191 x 468mm
(17 5/8″ x 7 5/8″ x 18 1/2″)
(including protrusions)
Weight 32kg (70 5/8 lb)
Included accessories Power cord x 1
Remote control (RC-1301) x 1
Batteries (AAA) x 2
Felt pads x4
Owner's manual x 1
Warranty card x 1
- This product is available in two different power supply variations as shown in the chart above.
Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
- The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.
- Specifications and appearance are subject to change without notice.
- Weight and dimensions are approximate.

BASS  tone curve

MIDDLE  tone curve

TREBLE  tone curve

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