CALL US NOW FOR MORE INFORMATION OR TO PLACE YOUR ORDER: 716-777-3100(THIS Item is in stock) The Leben CS-600X is a Japanese tube integrated amplifier delivering 32 watts per channel from four 6L6GC output tubes, with the option to switch to EL34 tubes for 28 watts per channel — a unique dual-tube flexibility that allows a single amplifier to serve two distinct sonic characters. Designed by Leben Hi-Fi founder Taku Hyodo and recognized by the international audiophile press, the CS-600X is the flagship integrated amplifier in the Leben CS series, built to drive a wide range of loudspeakers with authority and precision. Switchable Output Tubes: 6L6GC and EL34 The CS-600X is equipped with four SOVTEK 6L6GC (5881) output tubes as standard, delivering 32 watts per channel. By switching two internal selectors, the amplifier accepts EL34/6CA7 output tubes instead, reducing output to 28 watts per channel with a different tonal character. LED indicators on the front panel confirm which tube type is active. This dual compatibility is rare at any price point and makes the CS-600X uniquely adaptable to listener preference and system requirements. Engineering Highlights First-stage amplification: twin-triode 6CS7 tubes (x4) for low noise and high linearity Damper tube 6CJ3 delays high voltage supply to protect output tubes and extend tube life Heavy-duty output transformer rated for 50W-grade amplifiers — wider headroom and lower distortion Large-capacity choke coil: 5H / 350mA for stable, low-ripple power supply All audiophile-grade capacitors and resistors throughout the signal path WBT-type speaker binding posts 24K gold-plated control knobs Side wood panels Full-Function Integrated Amplifier The CS-600X provides five RCA line-level inputs plus a tape monitor loop. It accepts CD players, music streamers, tape decks, and external phono preamplifiers. A rear-panel PREAMP-IN input allows the CS-600X to be used as a standalone power amplifier driven by a separate preamplifier. Additional features: Power Amp Direct switch — bypasses all functions except volume control Variable output impedance: 4, 6, 8, or 16 ohms — wider speaker compatibility than most tube amps Headphone output with speaker/headphone selector switch Bass boost switch Muting switch Stereo/Reverse switch Tube indicator lamps and operation lamp indicator Specifications Tubes 6L6GC/5881 (SOVTEK) ×4 standard; EL34/6CA7 ×4 optional | 6CS7 ×4 | 6CJ3 ×1 Output Power 32W ×2 (6L6GC) | 28W ×2 (EL34) at 1kHz Frequency Response 10Hz – 100kHz (−0.1dB) THD 0.7% at 10W Input Sensitivity 900mV at 20W Output Impedance 4 / 6 / 8 / 16 Ohms (selectable) Weight 22.5 kg Dimensions 450 × 360 × 142 mm (W × D × H) Frequently Asked Questions What is the Leben CS-600X? The Leben CS-600X is a Japanese tube integrated amplifier made by Leben Hi-Fi. It delivers 32 watts per channel using 6L6GC output tubes, with an internal switch to accept EL34 tubes for 28 watts per channel. It is the flagship integrated amplifier in the Leben CS lineup, offering five line inputs, headphone output, power amp direct mode, and a selectable output impedance of 4, 6, 8, or 16 ohms. What is the difference between the Leben CS-600X and the Leben CS-300XS? The Leben CS-300XS uses EL84 output tubes and delivers 15 watts per channel, making it ideal for high-efficiency speakers above 90dB. The CS-600X uses 6L6GC or EL34 tubes and delivers 32 or 28 watts per channel respectively, driving a wider range of speakers including lower-sensitivity designs. The CS-600X also adds Power Amp Direct mode, a 16-ohm output tap, muting switch, and stereo/reverse switch. Can I use EL34 tubes in the Leben CS-600X? Yes. The CS-600X ships with SOVTEK 6L6GC tubes but is internally switchable to accept EL34/6CA7 output tubes. Two internal selectors are switched, and front-panel LED indicators confirm the active tube type. EL34 mode delivers 28 watts per channel with a different sonic character — generally described as more midrange-forward compared to 6L6GC. What speakers work best with the Leben CS-600X? With 32 watts per channel and a four-position output impedance selector (4/6/8/16 ohms), the CS-600X works with a broader range of speakers than most tube integrated amplifiers. Efficient designs from Dynaudio are excellent matches. The 16-ohm tap also accommodates vintage speakers and certain horn-loaded designs. Does the Leben CS-600X have a built-in phono stage? No. The CS-600X provides five RCA line-level inputs but no built-in phono stage. A separate phono preamplifier is required for turntable connection. Vinyl Sound Buffalo carries a full range of phono preamplifiers compatible with the CS-600X. Can the Leben CS-600X be used as a power amplifier? Yes. The CS-600X includes a rear-panel PREAMP-IN input and a front-panel Power Amp Direct switch. When activated, all functions except the volume control are bypassed, allowing the CS-600X to be driven directly by an external preamplifier or active crossover. Where can I buy the Leben CS-600X in the United States? Vinyl Sound is an authorized Leben dealer in Buffalo, NY, serving customers across the United States. The CS-600X is currently in stock. Purchase online or contact us at 716-777-3100 for expert system matching and ordering assistance. Vinyl Sound — Buffalo's Hi-Fi Store. We carry Leben Hi-Fi alongside turntables, phono stages, loudspeakers, and accessories from the world's leading high-fidelity brands. Our team in Buffalo, NY provides expert guidance on every purchase.
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