1.audio reserch LS 2B MK ll สภาพดีราคา 38,800.B
2.Krell KSB 7 สภาพดีราคา 39,800.B
สนใจติดต่อ 0816623531

audio reserch LS 2B MK ll
LS2B MKII is a hybrid vacuum tube and solid-state stereo line-stage preamplifier introduced in the early 1990s by Audio Research.

Key Specifications & Design

• Design Type: Hybrid FET (Field-Effect Transistor) and vacuum tube circuit operating in Class-A.
• Tube Complement: Uses a single 6922 twin triode vacuum tube to add subtle warmth and harmonic richness to the signal path.
• Gain: 18 dB (main/unbalanced) / 24 dB (balanced).
• Frequency Response: 1 Hz to 100 kHz (±0.5 dB).
• Total Harmonic Distortion (THD): Less than 0.01% at 2V RMS.
• Input Impedance: 50k ohms (unbalanced RCA) / 3M ohms (balanced XLR).
• Inputs & Outputs: Features both unbalanced (RCA) and balanced (XLR) I/O connections.
• Dimensions & Weight: 19" W x 5.25" H x 10.25" D;

Krell KSP7 B

Type Control amplifier
Input Terminal / Impedance Phono : 5 Ω, 10 Ω, 25 Ω, 47 Ω, 100 Ω, 247 Ω, 470 Ω, 810 Ω, 1k Ω, 47k Ω
CD, Tuner, Aux, Tape : 10k Ω
Output Terminal / Impedance Pre out : 10 Ω
Tape out : 10 Ω
Total harmonic distortion factor Phono : 0.05% or less
Line : ≤ 0.005%
Frequency characteristic 5 Hz to 100 kHz ± 1 dB or less
Signal-to-noise ratio Phono MM:78dB
Aux:100dB
Gain Phono MC:60dB
Phono MM:40dB
Line : 6.8dB/12.8 db Switching Type
Pwer 100 VAC, 50Hz/60Hz
Power consumption 50W
External dimensions Body : Width 467x Height 52x Depth 335 mm
Power Supply : W 190x H 58x D 200 mm
Weight Body : Approx. 7.8 kg
Power Supply Part : Approx. 3.5 kg

Krell KSP7 B