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Convergent Audio Technology (CAT) SL-1 Signature Vacuum Tube preamplifier made in USA หน้าเงิน มาพร้อม power supply ไฟเดิมๆ 220v. เสียงหวานอิ่มฉ่ำๆ รายละเอียดดีมาก ห้าดาวทุกสำนัก มีภาคโฟโนเล่นแผ่นเสียง รีบๆเลย
ราคา ฿128,000
สนใจสินค้าติดต่อสอบถามเพิ่มเติม 089-1415260
The Convergent Audio Technology (CAT) SL-1 Signature is a high-end, two-chassis tube preamplifier with a built-in phono stage. It has undergone numerous updates since its initial release, and specifications can vary slightly between different production marks, such as the Mk II and Mk III.
General specifications (based on Signature and Mk III versions)
Design: Two-chassis, vacuum tube stereo preamplifier with a separate external power supply.
Tube complement: The basic circuit design uses ten tubes: six 6922s and four 12AX7s, with one set for the line stage and another for the phono stage. The Mk III version notably changed the line stage input tube from a 12AU7 to a 6922 to reduce noise.
Volume control: The volume is controlled by a pair of military-grade, 46-position rotary switches that use solid silver contacts and high-precision resistors.
ข้อมูลเครื่อง
Power supply: The SL-1 Signature features an outboard power supply in a separate chassis to prevent interference with the audio circuits. The power supply design has been subject to various improvements over the years.
Construction: The chassis is built to be ultra-robust and anti-resonant, featuring a non-magnetic design. High-quality parts, such as custom capacitors and Teflon circuit boards, are used for sonic performance.
Performance specifications
Frequency response:
Line: 0.1 Hz to 600 kHz, +0, -3 dB.
Phono: 20 Hz to 20 kHz, ±0.2 dB.
Total Harmonic Distortion (THD) (at 1V):
Line: Less than 0.0005%.
Phono: Less than 0.001%.
Voltage gain (at 1 kHz):
Line: 26 dB.
Phono: 46 dB.
Noise (A-weighted):
Line: 90 dBA below 1V. (The Mk III upgrade significantly reduced noise to -112 dBA).
Phono: 96 dBA below 10 mV input.
Input overload (at 1 kHz):
Line: 100V rms.
Phono: 250mV rms.
Input impedance:
Line: 50 kOhms, 20 pF.
Phono: 47.5 kOhms, 180 pF (user-adjustable).
Physical specifications
Dimensions (approximate):
Preamplifier: 19" W x 5.24" H x 12.2" D.
Power Supply: 12.2" W x 4" H x 6" D.
Weight (approximate): 64 lbs (29.1 kg) |
