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Description
FiiO K7 Desktop DAC & AMPDescription Features Truly balanced headphone amp THX AAA 788+ amp technology Dual AK4493S DACs Multiple intelligent protection systems Power supply with numerous independent LDOs Included 12V 24W low noise switching power supply RGB status indicators 3 output modes Two levels of hardware gain Numerous outputs and inputs Truly balanced decoding and amplification The K7 has a six stage audio circuit with truly balanced analog and digital sections which
Description
Features
- Truly balanced headphone amp
- THX AAA 788+ amp technology
- Dual AK4493S DACs
- Multiple intelligent protection systems
- Power supply with numerous independent LDOs
- Included 12V/24W low-noise switching power supply
- RGB status indicators
- 3 output modes
- Two levels of hardware gain
- Numerous outputs and inputs
Truly balanced decoding and amplification
The K7 has a six-stage audio circuit with truly balanced analog and digital sections – which helps to reduce crosstalk and reproduce music to a great extent, allowing you to better enjoy the purity of your music.
Democratized high-quality balanced amplification couldn’t sound better
Using the same THX AAA 788+ amplifiers as the K9 Pro, the K7 is capable of outputting 560mW into a 300Ω load at 1% distortion, and 2000mW into a 32Ω load at 1% distortion. This ensures both low and high impedance headphones are powered with aplomb, and most importantly lets you experience musicality that’s sure to tug at your heartstrings.
Dual AK4493SEQ rich and delicate overall sound
The left and right channels are each equipped with an efficient high-performance AK4493SEQ. With this DAC’s pleasant timbre, its rich and delicate overall sound will let you rediscover your music all over again.
Robust decoding capabilities take a trip around the music world
The XMOS XUF208 decoder chip uses dual clock management to handle various music formats with ease, allowing you to easily listen to many audio formats.
RGB indicator lights for a colorful entrance
The RGB indicator lights are capable of displaying single colors as well as mixed colors, with a unique light flow effect during power-on/off or input switching. Dazzling and vivid light effects give your desk some much needed spice.
Specifications
| Name / Model No. | K7 | Hardware solution | DAC: AK4493S*2 , USB: XMOS XUF208 , Voume IC：NJU72315 * 2, AMP：THX AAA 788+ * 2 |
| Color | Black | Volume Scroll | Potentiometer+ADC Sampling |
| Weight | ≈610g | FiiO Control | Unsupported |
| Gain | L/H | Firmware upgrade | XMOS can be upgraded via USB |
| Maximum supported sampling rate |
PCM 384kHz-32bit/DSD256（USB DAC） PCM 192kHz-24bit（COAX） PCM 96KHz-24bit（OPT） |
Sampling rate indication | Blue：44.1KHz/48KHz Yellow：88.2/96/176.4/192/352.8/384KHz Green：DSD64/128/256 |
| Recommended headphone impedance | 16~300Ω | ||
| Buttons and interfaces | |||
| Buttons | input button*1+gain switch*1+output switch*1 | USB | USB B（data） |
| LINE IN | RCA sockets | LINE OUT | RCA sockets |
| OPT IN | TOSLINK | COAX IN | RCA sockets |
| BAL PO | Standard 4.4mm port | SE PO | Standard 6.35 mm port |
| Power parameters | |||
| Power supply | DC 12V/2A | Battery capacity | / |
| Audio parameters | |||
| Line output performance parameters | |||
| Frequency response | 20Hz~20KHz：±＜0.4dB（UAC) | Crosstalk | ≥102dB (1kHz/10kΩ) |
| 20Hz~20kHz：±＜0.8dB(SPDIF IN ) | Noise floor | ＜3μV（dbA） | |
| 20Hz~50KHz：±＜2.2dB（UAC) | SNR | ≥116dB (dbA，UAC) | |
| 20Hz~50kHz：±＜1.7dB(SPDIF IN ) | |||
| THD+N | ＜0.0005%(1kHz/10kΩ/dbA) | Output level | ≥2Vrms |
| Headphone output performance parameters（6.35mm） | |||
| Output power1 | L+R≥1220mW+1220mW（32Ω /THD+N＜1%) | Output impedance | ＜1Ω（32Ω） |
| Crosstalk | ≥77dB (1 kHz/32Ω) | ||
| Output power2 | L+R≥140mW+140mW（300Ω / THD+N＜1%) | Noise floor | ＜3.1μV（dbA，AUX IN) |
| Frequency response | 20Hz~20KHz：±＜0.3dB（UAC) | ＜4.4μV（dbA，UAC） | |
| 20Hz~20kHz：±＜0.7dB(SPDIF IN ) | |||
| 20Hz~50KHz：±＜2.1dB（UAC) | SNR | ≥128dB (dbA，AUX IN） ≥120dB (dbA，UAC） |
|
| 20Hz~50kHz：±＜1.6dB(SPDIF IN ) | |||
| THD+N | ＜0.0003% (1 kHz/32Ω/dbA) | Peak output voltage | ≥18.9Vpp |
| Balanced headphone output performance parameters（4.4mm） | |||
| Output power2 | L+R≥2000mW+2000mW（32Ω /THD+N＜1%) | Output impedance | ＜1Ω（32Ω） |
| Crosstalk | ≥124dB(1 kHz/32Ω) | ||
| Output power3 | L+R≥560mW+560mW（300Ω / THD+N＜1%) | Noise floor | ＜5.1μV（dbA，AUX IN) |
| Frequency response | 20Hz~20KHz：±＜0.3dB（UAC) | ＜7.7μV（dbA，UAC） | |
| 20Hz~20kHz：±＜0.7dB(SPDIF IN ) | |||
| 20Hz~50KHz：±＜2.1dB（UAC) | SNR | ≥128dB (dbA，AUX IN） ≥120dB (dbA，UAC） |
|
| 20Hz~50kHz：±＜1.6dB(SPDIF IN ) | |||
| THD+N | ＜0.0003% (1 kHz/32Ω/dbA) | Peak output voltage | ≥37.7Vpp |
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4.6 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Incredible & Absolutely Fascinating
Format: Paperback
This book is incredible. Very well researched and balanced in approach. It is the best book I've ever read on the early church and the most inspiring book I've read on how the church can be powerful without seeking worldly power. I would highly recommend this to every pastor and serious Christian. I wouldn't advocate for adopting everything the early church did (Kreider doesn't either), but there is so much to learn. Especially the church in the West, and specifically in America, where Christian nationalism is on the rise. This book could not be more timely or important in helping people understand the relationship between the church and government, and why discipleship that actually changes the habits, values, and lives of Christians must become the hallmark of the church again.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
So much I never realized about the shaping of the early Church
Format: Paperback
This is one of the best books I've read. Really well researched. It is interesting in its empahsize on the virtue of patience from the perspective of the early church as it was shaped and formed into what we recognize as The Church.
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Reviewed in the United States on June 27, 2024
★★★★★ 5
Profoundly challenging; I'm going back to this over and over
Format: Paperback
The remarkable growth of the early church has puzzled and challenged scholars. How did a tiny sect that attracted mainly the poor and unimportant and faced waves of persecution grow? How did they sustain their vigor and their distinctiveness such that well into the third century they were still well known for their non violence and care of the poor and downtrodden? Why did the church make baptism and membership so difficult? I've never found satisfactory answers. Kreider's exhaustively researched book did more than answer those questions. It stirred and challenged my thinking about how to "do church."
He argues, with compelling evidence, that a central conviction by the early Christians had much to do with their sustained vitality. They centered on the teachings of Jesus, in particular the sermon on the mount. They actually believed they were to live in obedience to the upside down Way of Jesus. It was this distinctive and intriguing lifestyle - Kreider uses the term "habitus" or their habitual behavior - that the church insisted upon and that attracted others. They patiently lived in community, expecting that over time, the impact of the light of their lives would "bubble up" or ferment in the lives of their neighbors.
So, rather than emphasize evangelism, the early Christians emphasized catechesis - careful formation and teaching. Only after a lengthy period of time - up to three years! - during which the prospective member was mentored and drilled in the life of Christ, was the person allowed to be baptized and take the Lord's Supper. They had to demonstrate, prove, that they were indeed genuinely living the life of Christ. Caring for the poor, sharing their resources, returning good for evil, turning the other cheek - those things had to be demonstrably evident.
Kreider ends by contrasting this patient habitus with the changing focus after Constantine. His examination of Augustine's redefinition of faithful Christian living that provided a way for Christians to both claim allegiance to Jesus' teachings yet use force and violence was both incisive and deeply saddening.
These days, most followers of Jesus do a better job of rationalizing why they can't take the Sermon on the Mount as more than platitudes. This book further challenges me, and I hope, the church at large, to actually live like Jesus! What a novel idea.
There are just a handful of books that have deeply influenced me, books that I find myself returning to again and again. The Patient Ferment is one of those books now. I hope this book becomes widely read, and even more, widely influential. May it disturb our comfort...
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Reviewed in the United States on May 8, 2017
★★★★★ 4
Insightful, balanced and thoroughly researched
Format: Kindle
I was a bit afraid that this book would somehow a attribute of the early church, postulate it as a silver bullet and then suggest it simplictically as the only solution for the modern day church. Instead I got a well balanced, finely nuanced and engagingly told narrative of the early church and the role patience was practiced, neglected and rethought by various Christian groups and bishops. The book end with an adequate invitation to think the concepts through for our own time.
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Reviewed in the United States on January 11, 2018
★★★★★ 5
Excellent
Format: Paperback
I might be as bold to say this is my favorite book on Christianity I have read to date.
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Reviewed in the United States on October 2, 2025