Cayin Soul 170I KT170 Tube Integrated Amplifier

Cayin

Cayin Soul 170I KT170 Tube Integrated Amplifier

130W KT170 Power with Triode & Ultralinear Modes

$6,999

Color: Standard Finish

Quantity:

Description

The Cayin Soul 170I KT170 Tube Integrated Amplifier combines the musical character of premium tube amplification with exceptional power, flexibility, and craftsmanship. Designed around four Tung-Sol KT170 output tubes in a Class AB push-pull configuration, the Soul 170I delivers an impressive 130 watts per channel in Ultralinear mode or 75 watts per channel in Triode mode.

With two selectable operating modes, the Soul 170I allows you to tailor its presentation to your music and system. Triode mode delivers a smoother, richer, and more intimate presentation that is particularly engaging with vocals and acoustic instruments. Ultralinear mode provides greater power, extension, dynamics, and loudspeaker control ideal for music that demands scale and impact.

The all-tube design features a 22DE4 tube rectifier, two ECC83S voltage-amplification tubes, two 6SN7 driver tubes, and four KT170 output tubes. Cayin employs traditional point-to-point wiring, with the circuitry and signal path hand-wired using heavy-gauge cable.

At the heart of the Soul 170I are Cayin's custom-designed, in-house-wound wide-bandwidth EI output transformers, complemented by a custom toroidal power transformer engineered for strong power delivery and low noise. Premium components include an ALPS volume control, porcelain tube sockets, audio-grade capacitors, and carbon-film resistors.

Connectivity includes three stereo RCA line inputs, one balanced XLR input, and a Pre-In connection. The Pre-In allows the Soul 170I to be paired with an external preamplifier and used as a power amplifier. A dedicated subwoofer output provides additional flexibility for systems incorporating powered subwoofers.

Separate 4-ohm and 8-ohm speaker outputs accommodate a wide range of loudspeakers. Individual KT170 bias adjustment controls and a convenient top-mounted bias meter make monitoring and adjusting the output tubes straightforward.

Soft-start circuitry, a high-voltage delay, and dedicated high-voltage protection fuses help protect the amplifier and its tubes, while the included remote control provides convenient everyday operation.

With its substantial power, selectable Triode and Ultralinear modes, premium tube complement, custom transformers, and meticulous point-to-point construction, the Cayin Soul 170I is designed to serve as the centerpiece of a reference-quality two-channel audio system.

Frequently Asked Questions

What tubes does the Cayin Soul 170I use?

The Cayin Soul 170I uses four KT170 power tubes, two ECC83S voltage-amplification tubes, two 6SN7 driver tubes, and one 22DE4 rectifier tube. The KT170 output stage operates in a Class AB push-pull configuration.

How much power does the Cayin Soul 170I produce?

The Soul 170I delivers 75 watts per channel in Triode mode and 130 watts per channel in Ultralinear mode, giving listeners the flexibility to choose between two distinct

What is the difference between Triode and Ultralinear mode?

Triode mode delivers 75 watts per channel and offers a smoother, richer, and more intimate presentation. Ultralinear mode increases output to 130 watts per channel for greater dynamics, authority, and loudspeaker control.

Does the Cayin Soul 170I have balanced XLR inputs?

Yes. The Soul 170I includes one stereo balanced XLR input, along with three stereo RCA line inputs for connecting multiple source components.

Can the Cayin Soul 170I be used with an external preamplifier?

Yes. A dedicated Pre-In allows the Soul 170I to be connected to an external preamplifier and used as the power-amplification stage of a two-channel system.

Can I connect a subwoofer to the Cayin Soul 170I?

Yes. The Soul 170I includes a dedicated stereo Sub Out, making it easy to integrate powered subwoofers into your system.

Does the Cayin Soul 170I work with 4-ohm and 8-ohm speakers?

Yes. The amplifier provides dedicated 4-ohm and 8-ohm speaker outputs, allowing it to be properly matched with a wide range of compatible loudspeakers.

Does the Cayin Soul 170I require tube bias adjustment?

The Soul 170I features individual bias adjustment for its KT170 power tubes. A convenient top-panel meter allows the tube bias to be monitored and adjusted as needed.

Specifications

TECHNICAL SPECIFICATIONS
Product Type	Tube Integrated Amplifier
Amplifier Design	Class AB Push-Pull Vacuum Tube Integrated Amplifier
Power Output — Triode Mode	75W + 75W
Power Output — Ultralinear Mode	130W + 130W
Frequency Response	5Hz – 50kHz (-3dB)
Total Harmonic Distortion (THD)	0.2% at 1kHz
Signal-to-Noise Ratio	97dB
Input Sensitivity	420mV — Integrated 1300mV — Pre-In
Input Impedance	100kΩ
Speaker Output Impedance	4Ω / 8Ω
Inputs	3 × Stereo RCA Line Inputs 1 × Stereo Balanced XLR Input 1 × Stereo Pre-In
Outputs	1 × Stereo Subwoofer Output 4Ω / 8Ω Speaker Outputs
Tube Complement	1 × 22DE4 Rectifier Tube 2 × ECC83S Voltage-Amplification Tubes 2 × 6SN7 Driver Tubes 4 × KT170 Power Tubes
Bias Adjustment	User-Adjustable KT170 Bias with Integrated Top-Panel Bias Meter
Construction	Point-to-Point Hand-Wired Circuitry
Output Transformers	Custom-Designed, In-House-Wound Wide-Bandwidth EI Output Transformers
Power Transformer	Custom Toroidal Power Transformer
Maximum Power Consumption	680W
Dimensions (W × D × H)	430 × 448 × 238 mm (16.9 × 17.6 × 9.4 in)
Net Weight	38.7 kg (85.3 lb)
Remote Control	Included

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Cayin Cayin Soul 170I KT170 Tube Integrated Amplifier