Fiio K9 SERIES Flagship Desktop Headphone Amplifier Dac

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Fiio K9 SERIES Flagship Desktop Headphone Amplifier Dac

Name: Fiio K9 SERIES Flagship Desktop Headphone Amplifier Dac
Brand: Fiio
SKU: 44761459818737
Price: 799.00 CAD
Availability: InStock

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K9 Series

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The Fiio K9 Pro is designed to be uncompromising as both an amp and a DAC. Its outstanding performance will ensure you want to leave a spot for the K9 Pro in your collection of audio gear.

The K9 Pro is equipped with the ESS (9038PRO) OR AKM (digital (AK4191EQ) and analog (AK4499EX) sections), renowned in the audio industry for its exceptional performance and unparalleled decoding capabilities, supporting up to 384 kHz and native DSD256 audio. And given its current scarcity, it is definitely a chip many are eager to experience.

The THX AAA 788+ used in the K9 Pro provide exemplary details and dynamics no matter if you are using low or high-impedance headphones. The K9 Pro can output up to 46Vpp transients when driving high-impedance loads, and up to an undistorted 2W* when pushing low-impedance loads. Compared to the original, the output power of the K9 Pro has increased by more than 50% with higher heat dissipation efficiency.

Specifications: AKM

Name/Model	K9 AKM	Hardware Scheme	DAC: AK4499EX+AK4191EQ, USB decoding: XUF208, Bluetooth: QCC5124, LPF: OPA16122, Volume IC: NJU723152, AMP: THX AAA788+*2, transformer: linear transformer
color	Black	Volume Control Type	Analog Potentiometer (ADC sampling)
Weight	Approximately 2660g	Channel Balance	L12 to R12 (0.5dB per stage)
gain	L/M/H	FiiO Control	support
Bluetooth format indication	support	Sample Rate Indication	support
Dimensions	200x 224.5x 72mm (excluding foot pads)	Firmware Upgrade	System firmware upgrades through USB, Bluetooth firmware upgrades through FIIO Control
Deep Standby	Long press the multi-function key for about 3 seconds	Low Power Reminder	None
Bluetooth Transmitter	None	Bluetooth reception (5.1)	AAC/SBC/aptX/aptX LL/aptX HD/LDAC/atpX Adaptive
Bluetooth format indicator	SBC: blue, AAC: cyan, aptX HD: yellow, aptX: purple, aptX LL: purple, LDAC: white, atpX Adaptive: green	Adapted impedance	PO:8~150Ω
Maximum supported sampling rate	768kHz-32bit/DSD512(USB DAC)		BAL:8~350Ω
	192 kHz-24bit (coaxial)
	96 KHz-24bit (fiber)
Keys and Interfaces
key	Solid key + toggle switch	USB	USB B1, Type-C1
Single-ended input interface	RCA Socket	Balancing Line Input Interface	4.4mm balance socket
Digital Fiber Input Interface	optical fiber socket	Digital Coaxial Input Interface	RCA socket
Balancing output interface	4.4mm socket, XLR4 balanced socket	Headphone output interface	standard 6.35mm socket
Balancing line output interface	XLR3 balance socket	Single-ended line output interface	RCA Socket
Power Parameters
power supply	AC 100-120V ~/AC 220-240V ~ (recommended)	Battery Capacity	None
Audio Parameters
Some performance parameters of single-ended line output
distortion plus noise	＜0.00027% (1kHz/-0.7dB@10kΩ)	signal-to-noise ratio	≥119dB (A-weighted)
channel separation	≥112dB (1kHz@10kΩ)	bottom noise	＜2.9μV (A-weighted)
frequency response	20Hz~50kHz: damping＜-3.5dB	Line Output Level	2.3Vrms (1kHz@10kΩ)
Performance Parameters of Balanced Line Output
distortion plus noise	＜0.00020% (1kHz/-1dB@10kΩ)	signal-to-noise ratio	≥128dB (A-weighted)
channel separation	≥122dB (1kHz@10kΩ)	bottom noise	＜1.9μV (A-weighted)
frequency response	20Hz~50kHz: damping＜-3.5dB	Line Output Level	4.7Vrms (1kHz@10kΩ)
Headset Output Part Performance Parameters (6.35mm)
Output power 1	L+R≥1000mW+1000mW (16Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN)	output impedance	＜1Ω (32Ω)
Output power 2	L+R≥1500mW+1500mW (32Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN)	channel separation	≥76dB (1kHz@32Ω)
Output power 3	L+R≥200mW+200mW (300Ω, THD+N＜1%, AUX IN)	distortion plus noise	＜0.00026% (1kHz/-1.3dB@32Ω)
bottom noise	＜3.0μV (A-weighted)	signal-to-noise ratio	≥127dB (A-weighted)
frequency response	20Hz~50kHz: damping＜-3.5dB	peak output voltage	＞21Vp-p
balanced headphone output part performance parameters (4.4mm/XLR4)
Output power 1	L+R≥1000mW+1000mW (16Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN)	output impedance	＜1Ω (32Ω)
Output power 2	L+R≥2000mW+2000mW (32Ω, THD+N＜1%, AUX/UAC/SPDIF/BT IN)	channel separation	≥116dB (1kHz@32Ω)
Output power 3	L+R≥780mW+780mW (300Ω, THD+N＜1%, AUX IN)	distortion plus noise	＜0.00029% (1kHz/-9.5dB@32Ω)
bottom noise	＜5.2μV (A-weighted)	signal-to-noise ratio	≥124dB (A-weighted)
frequency response	20Hz~50kHz: damping＜-3.5dB	peak output voltage	＞42Vp-p

SPECIFICATIONS: ESS 9038 PRO
Product type	DAC Headphone amplifier
Dac	ESS9038 PRO
Inputs	Bluetooth 1x USB-B 1x Single-ended stereo RCA 1x Balanced Jack 4.4mm 1x Optical Toslink 1x Coaxial
Outputs	1x Single-ended stereo RCA line output 1x Balanced stereo XLR line output 1x Single-ended Jack 6.35mm headphone output 1x Balanced Jack 4.4mm headphone output 1x Balanced XLR 4 pins headphone output
USB Interface	XMOS XUF208
Bluetooth chip	QCC5124
LPF	2x OPA1612
Volume controller	2x NJU72315
Amplification chip	2x THX AAA788+
Channels balance	L12~R12 (0.5dB per level)
Gain	L (Low) M (Medium) H (High)
FiiO Control
Supported Bluetooth codecs	AAC, SBC, aptX, aptX LL, aptX HD, LDAC, aptX Adaptive
Bluetooth codecs indicators	SBC : Blue AAC : Cyan aptX HD : Yellow aptX : Purple aptX LL : Purple LDAC : White aptX Adaptive : Green
Supported sampling rates	USB : PCM up to 32bit 384kHz, DSD up to DSD256 Coaxial : PCM up to 24bit 192kHz Optical : PCM up to 24bit 96kHz
Recommended headphone impedance	16~600Ω

SINGLE-ENDED LINE OUTPUT PERFORMANCES
THD+N	< 0.0007% (1kHz/10kΩ/dBA)
SNR	≥ 123dB (dBA)
Crosstalk	≥ 110dB (1kHz/10kΩ)
Noise floor	< 1.9µV (dBA)
Frequency response	20Hz~20kHz (-3dB)
Line level	2.5Vrms (1kHz/10kΩ)

BALANCED LINE OUTPUT PERFORMANCES
THD+N	< 0.0004% (1kHz/10kΩ/dBA)
SNR	≥ 128dB (dBA)
Crosstalk	≥ 123dB (1kHz/10kΩ)
Noise floor	< 1.9µV (dBA)
Frequency response	20Hz~20kHz (-3dB)
Line level	5Vrms (1kHz/10kΩ)

SINGLE-ENDED HEADPHONE OUTPUT PERFORMANCES (JACK 6.35MM)
Output power	≥ 1.1W @ 16Ω, THD+N < 1%, AUX IN ≥ 2W @ 32Ω, THD+N < 1%, AUX IN ≥ 278mW @ 300Ω, THD+N < 1%, AUX IN
Output impedance	< 1Ω (32Ω)
Crosstalk	≥ 75dB (1kHz, 32Ω, AUX IN)
THD+N	< 0.0005% (1kHz/32Ω/dBA)
Noise floor	< 2µV(dBA)
SNR	≥ 123dBA
Frequency response	20Hz~20kHz (-3dB)
Max output voltage	> 256Vp-p

BALANCED HEADPHONE OUTPUT PERFORMANCES (JACK 4.4MM, XLR4)
Output power	≥ 1.1W @ 16Ω, THD+N < 1%, AUX IN ≥ 2W @ 32Ω, THD+N < 1%, AUX IN ≥ 278mW @ 300Ω, THD+N < 1%, AUX IN
Output impedance	< 1Ω (32Ω)
Crosstalk	≥ 114dB (1kHz, AUX IN)
THD+N	< 0.0004% (1kHz/32Ω/dBA)
Noise floor	< 3µV(dBA)
SNR	≥ 123dBA
Frequency floor	5Hz~50kHz (-3dB)
Max output level	>51Vp-p

GENERAL
Supply voltage	110-115VAC / 220-230VAC
Dimensions
Weight	~2750g
Case material	Aluminum
Color	Black